Theme CSS Variables
This page lists the main Scheduler theme CSS variables that can be useful when customizing skins.
The defaults are defined in scheduler/sources/css/src/themes/variables.less; other theme files override part of this list.
For examples of overriding these variables in an application or a custom skin, see Skins Customization.
Start with the base typography, color, container, popup, border, radius, spacing, and event variables. Variables described as "Defaults to" or "Derived from" inherit from another CSS variable by default; override them directly only when that part of Scheduler should intentionally differ from the rest of the theme.
Theme identity
| Variable | Description |
|---|---|
--dhx-scheduler-theme | Stores the active Scheduler theme name used by Scheduler to detect CSS-variable based skins. |
Typography
| Variable | Description |
|---|---|
--dhx-scheduler-font-family | Sets the main font family for the Scheduler container and inherited UI elements. |
--dhx-scheduler-font-size | Sets the base font size used by Scheduler text and derived typography tokens. |
--dhx-scheduler-heading-font-size | Sets the font size for prominent headings such as the current date label and popup titles; derived from --dhx-scheduler-font-size by default. |
--dhx-scheduler-heading-font-weight | Sets the font weight for Scheduler headings and section labels. |
--dhx-scheduler-important-font-size | Sets the font size for emphasized text such as toolbar and quick-info date labels; defaults to --dhx-scheduler-font-size. |
--dhx-scheduler-important-line-height | Sets the line height for emphasized text blocks. |
--dhx-scheduler-important-font-weight | Sets the font weight for emphasized text and navigation labels. |
--dhx-scheduler-regular-font-size | Sets the regular body text size for popups, tooltips, and general content; defaults to --dhx-scheduler-font-size. |
--dhx-scheduler-regular-font-weight | Sets the regular body text weight for Scheduler content. |
--dhx-scheduler-regular-line-height | Sets the regular body text line height. |
--dhx-scheduler-caption-font-size | Sets the compact caption text size used by scales, month events, and event titles; derived from --dhx-scheduler-font-size by default. |
--dhx-scheduler-caption-font-weight | Sets the compact caption text weight used by scales and month events. |
--dhx-scheduler-caption-line-height | Sets the compact caption text line height. |
Base colors
| Variable | Description |
|---|---|
--dhx-scheduler-base-colors-primary | Sets the main accent color for active controls, datepicker highlights, and default action styling. |
--dhx-scheduler-base-colors-primary-hover | Sets the hover color for primary controls and datepicker hover states. |
--dhx-scheduler-base-colors-primary-active | Sets the active or pressed color for primary controls. |
--dhx-scheduler-base-colors-primary-lighter | Sets the light accent fill used by outline button hover states and subtle highlights. |
--dhx-scheduler-base-colors-warning | Sets the warning color used by warning messages. |
--dhx-scheduler-base-colors-error | Sets the danger color used by delete buttons, error messages, and related states. |
--dhx-scheduler-base-colors-error-hover | Sets the hover color for danger controls. |
--dhx-scheduler-base-colors-error-active | Sets the active or pressed color for danger controls. |
--dhx-scheduler-base-colors-error-lighter | Sets the light danger fill used by danger-outline hover states. |
--dhx-scheduler-base-colors-error-text | Sets the text color for controls with an error-colored background. |
--dhx-scheduler-base-colors-success | Defines the semantic success color token in the theme palette. |
--dhx-scheduler-base-colors-white | Sets the white color token used by controls and selected datepicker cells. |
--dhx-scheduler-base-colors-select | Sets the selected or highlighted background color for current dates, selected rows, and alternating grid rows. |
--dhx-scheduler-base-colors-hover-color | Defines a shared hover background token in the theme palette. |
--dhx-scheduler-base-colors-border | Sets the base border color for grid lines, scales, and form controls. |
--dhx-scheduler-base-colors-icons | Sets the default icon color. |
--dhx-scheduler-base-colors-icons-hover | Sets the icon color for hovered icon buttons. |
--dhx-scheduler-base-colors-icons-active | Sets the icon color for active icon buttons. |
--dhx-scheduler-base-colors-disabled | Sets the disabled background color for controls and blocked time areas. |
--dhx-scheduler-base-colors-readonly | Sets the text color for read-only values in the lightbox; defaults to --dhx-scheduler-base-colors-icons. |
--dhx-scheduler-base-colors-text-light | Sets the secondary text color used by navigation, scales, and sort indicators. |
--dhx-scheduler-base-colors-text-base | Sets the main text color token used by the Scheduler container and derived elements. |
--dhx-scheduler-base-colors-background | Sets the main background color token used by the Scheduler container. |
Container and popup surfaces
| Variable | Description |
|---|---|
--dhx-scheduler-container-background | Sets the Scheduler container background; defaults to --dhx-scheduler-base-colors-background. |
--dhx-scheduler-container-color | Sets the Scheduler container text color; defaults to --dhx-scheduler-base-colors-text-base. |
--dhx-scheduler-popup-background | Sets the background for popups, tooltips, quick info, datepickers, and lightbox-derived surfaces; defaults to --dhx-scheduler-container-background. |
--dhx-scheduler-popup-color | Sets the text color for popups, tooltips, quick info, datepickers, and lightbox-derived surfaces; defaults to --dhx-scheduler-container-color. |
--dhx-scheduler-popup-border | Sets the border for popup-style surfaces. |
--dhx-scheduler-popup-border-radius | Sets the border radius for popup-style surfaces; defaults to --dhx-scheduler-border-radius. |
Layout, borders, and shadows
| Variable | Description |
|---|---|
--dhx-scheduler-base-module | Sets the base sizing unit used for compact dimensions such as event padding and resize handles. |
--dhx-scheduler-base-padding | Sets the base spacing unit used across Scheduler controls, scales, month cells, and forms. |
--dhx-scheduler-border-radius | Sets the common border radius for Scheduler controls, events, tabs, and framed UI elements; defaults to --dhx-scheduler-base-module. |
--dhx-scheduler-box-shadow-s | Sets the small shadow used by quick info, datepickers, and selected event menus. |
--dhx-scheduler-box-shadow-m | Sets the medium shadow used by tooltips, minicalendars, global tips, and info messages. |
--dhx-scheduler-box-shadow-l | Sets the large shadow used by modal boxes. |
--dhx-scheduler-toolbar-height | Sets the minimum height of the Scheduler navigation line. |
--dhx-scheduler-navline-font-color | Sets the text color of the navigation line; defaults to --dhx-scheduler-base-colors-text-light. |
--dhx-scheduler-default-border | Sets the default border used for data areas, scale cells, month cells, and list rows; derived from --dhx-scheduler-base-colors-border by default. |
--dhx-scheduler-header-border | Sets the border used by header and scale areas; defaults to --dhx-scheduler-default-border. |
--dhx-scheduler-halfhour-border | Sets the border style for inner time slots between full-hour rows; derived from --dhx-scheduler-base-colors-border by default. |
Events
| Variable | Description |
|---|---|
--dhx-scheduler-event-text-primary | Sets the default text color token for event text placed over the default event background. |
--dhx-scheduler-event-blue | Sets the predefined blue event background gradient. |
--dhx-scheduler-event-green | Sets the predefined green event background gradient. |
--dhx-scheduler-event-violet | Sets the predefined violet event background gradient. |
--dhx-scheduler-event-yellow | Sets the predefined yellow event background gradient. |
--dhx-scheduler-event-background | Sets the default background for rendered events in day, week, timeline, agenda, year, and map views; defaults to --dhx-scheduler-event-blue. |
--dhx-scheduler-event-border | Sets the border for rendered event boxes and bars. |
--dhx-scheduler-event-color | Sets the default text color for rendered event boxes and bars; defaults to --dhx-scheduler-event-text-primary. |
--dhx-scheduler-event-marker-color | Sets the color of small event markers used in compact calendar cells; defaults to --dhx-scheduler-event-background. |
--dhx-scheduler-event-title-font-size | Sets the font size for the event title/header line; defaults to --dhx-scheduler-caption-font-size. |
--dhx-scheduler-event-title-line-height | Sets the line height for the event title/header line; defaults to --dhx-scheduler-caption-line-height. |
--dhx-scheduler-event-text-font-size | Sets the font size for event body text; defaults to --dhx-scheduler-regular-font-size. |
--dhx-scheduler-event-text-line-height | Sets the line height for event body text; defaults to --dhx-scheduler-regular-line-height. |
--dhx-scheduler-event-text-font-weight | Sets the font weight for event body text; defaults to --dhx-scheduler-regular-font-weight. |
--dhx-scheduler-event-bar-font-size | Sets the compact font size used by event bars and small events; defaults to --dhx-scheduler-caption-font-size. |
--dhx-scheduler-event-bar-line-height | Sets the compact line height used by event bars and small events; defaults to --dhx-scheduler-caption-line-height. |
--dhx-scheduler-event-menu-background | Sets the background for the selected event action menu; defaults to --dhx-scheduler-popup-background. |
--dhx-scheduler-event-menu-color | Sets the text and icon color for the selected event action menu; defaults to --dhx-scheduler-base-colors-primary. |
Per-event color and textColor values override --dhx-scheduler-event-background and --dhx-scheduler-event-color through inline CSS variables.
Lightbox and form controls
| Variable | Description |
|---|---|
--dhx-scheduler-control-height | Sets the default height of buttons, inputs, and select controls. |
--dhx-scheduler-checkbox-height | Sets the height of checkbox-style inputs in the lightbox. |
--dhx-scheduler-lightbox_font-family | Sets the font family used inside the lightbox; defaults to --dhx-scheduler-font-family. |
--dhx-scheduler-lightbox-font-size | Sets the default font size used inside the lightbox; defaults to --dhx-scheduler-important-font-size. |
--dhx-scheduler-lightbox-font-weight | Sets the default font weight used inside the lightbox; defaults to --dhx-scheduler-important-font-weight. |
--dhx-scheduler-lightbox-background | Sets the lightbox background color; defaults to --dhx-scheduler-popup-background. |
--dhx-scheduler-lightbox-border | Sets the outer lightbox border; defaults to --dhx-scheduler-popup-border. |
--dhx-scheduler-lightbox-control-border | Sets the border for lightbox inputs, selects, and textareas; defaults to --dhx-scheduler-default-border. |
--dhx-scheduler-lightbox-color | Sets the lightbox text color; defaults to --dhx-scheduler-popup-color. |
--dhx-scheduler-lightbox-title-background | Sets the lightbox title bar background; defaults to --dhx-scheduler-base-colors-select. |
--dhx-scheduler-lightbox-title-color | Sets the lightbox title bar text color; defaults to --dhx-scheduler-lightbox-color. |
--dhx-scheduler-lightbox-title-font-size | Sets the lightbox title font size; defaults to --dhx-scheduler-heading-font-size. |
--dhx-scheduler-lightbox-max-width | Sets the default maximum width of the lightbox. |
--dhx-scheduler-lightbox-wide-max-width | Sets the maximum width of the wide lightbox layout. |
--dhx-scheduler-lightbox-width | Sets the active lightbox width token used by the default and wide lightbox layouts; defaults to --dhx-scheduler-lightbox-max-width. |
Scales and calendar views
| Variable | Description |
|---|---|
--dhx-scheduler-scale-color | Sets the text color for day, week, month, and timeline scale labels; defaults to --dhx-scheduler-container-color. |
--dhx-scheduler-timescale-background | Sets the background for time scale holders and month cells; defaults to --dhx-scheduler-container-background. |
--dhx-scheduler-timescale-today-background | Sets the background used for the current day in time scales, month cells, and datepicker cells; defaults to --dhx-scheduler-base-colors-select. |
--dhx-scheduler-hours-font-size | Sets the font size for hour labels in day and week views; defaults to --dhx-scheduler-caption-font-size. |
--dhx-scheduler-hours-font-weight | Sets the font weight for hour labels in day and week views; defaults to --dhx-scheduler-caption-font-weight. |
--dhx-scheduler-inactive-month-color | Sets the color for dates outside the active month; defaults to --dhx-scheduler-base-colors-icons. |
--dhx-scheduler-month-header-color | Sets the text color for month-cell headers; defaults to --dhx-scheduler-container-color. |
--dhx-scheduler-month-day-header-padding | Sets the padding of month-cell day headers; derived from --dhx-scheduler-base-padding by default. |
--dhx-scheduler-month-event-marker-size | Sets the size of compact event markers in month, quick-info, and datepicker UI; derived from --dhx-scheduler-base-module by default. |
--dhx-scheduler-list-line-height | Sets the row height and line height for agenda legacy and grid rows. |
Timeline, grid, and agenda
| Variable | Description |
|---|---|
--dhx-scheduler-agenda-date-column-width | Sets the date column width in the legacy agenda view. |
--dhx-scheduler-agenda-date-width | Sets the date header column width in the newer agenda view. |
--dhx-scheduler-agenda-event-date-width | Sets the minimum width of the event time column in the newer agenda view. |
--dhx-scheduler-grid-event-background | Sets the background for grid view event rows. |
--dhx-scheduler-grid-event-text | Sets the text color for grid view event rows. |
--dhx-scheduler-timeline-folder-background | Sets the background for folder rows and folder cells in timeline and tree timeline views; defaults to --dhx-scheduler-base-colors-disabled. |
--dhx-scheduler-timeline-folder-color | Sets the text color for timeline folder labels; defaults to --dhx-scheduler-base-colors-primary. |
--dhx-scheduler-treetimeline-level-padding | Sets the indentation step for each nested level in tree timeline labels. |
--dhx-scheduler-week-agenda-scale-height | Sets the height of day headers in week agenda view. |
--dhx-scheduler-week-agenda-scale-font-size | Sets the font size of day headers in week agenda view; defaults to --dhx-scheduler-important-font-size. |
--dhx-scheduler-week-agenda-scale-font-weight | Sets the font weight of day headers in week agenda view; defaults to --dhx-scheduler-heading-font-weight. |
Markers and blocked time
| Variable | Description |
|---|---|
--dhx-scheduler-blocked-time-background | Sets the background for blocked or marked time spans; defaults to --dhx-scheduler-base-colors-disabled. |
--dhx-scheduler-today-marker-color | Sets the color of the current-time marker line; defaults to --dhx-scheduler-base-colors-error. |
Modal boxes and messages
| Variable | Description |
|---|---|
--dhx-scheduler-info-background | Sets the background for Scheduler info messages; defaults to --dhx-scheduler-popup-background. |
--dhx-scheduler-info-color | Sets the text color for Scheduler info messages; defaults to --dhx-scheduler-popup-color. |
--dhx-scheduler-info-border | Sets the border for Scheduler info messages; defaults to --dhx-scheduler-popup-border. |
--dhx-scheduler-info-shadow | Sets the shadow for Scheduler info messages; defaults to --dhx-scheduler-box-shadow-m. |
--dhx-scheduler-modal-background | Sets the background for Scheduler modal boxes; defaults to --dhx-scheduler-popup-background. |
--dhx-scheduler-modal-border | Sets the border for Scheduler modal boxes; defaults to --dhx-scheduler-popup-border. |
--dhx-scheduler-modal-padding | Sets the internal padding for Scheduler modal content and controls. |
--dhx-scheduler-modal-width | Sets the width of Scheduler modal boxes. |
--dhx-scheduler-modal-border-radius | Sets the border radius for Scheduler modal boxes; defaults to --dhx-scheduler-popup-border-radius. |
--dhx-scheduler-undo-delete-background | Sets the background for the undo-delete info message; defaults to --dhx-scheduler-base-colors-text-base. |
--dhx-scheduler-undo-delete-color | Sets the text color for the undo-delete info message; defaults to --dhx-scheduler-event-color. |
Scheduler geometry bridge
| Variable | Description |
|---|---|
--dhx-scheduler-xy-scale_width | Sets the CSS-driven value for scheduler.xy.scale_width. |
--dhx-scheduler-xy-bar_height | Sets the CSS-driven value for scheduler.xy.bar_height. |
--dhx-scheduler-xy-month_head_height | Sets the CSS-driven value for scheduler.xy.month_head_height. |
--dhx-scheduler-xy-scale_height | Sets the CSS-driven value for scheduler.xy.scale_height. |
--dhx-scheduler-xy-scroll_width | Sets the CSS-driven value for scheduler.xy.scroll_width. |
--dhx-scheduler-config-form_wide | Lets a theme enable the wide lightbox form setting through CSS. |
Scheduler reads the geometry bridge variables from computed styles and applies numeric values to the matching scheduler.xy settings.