Dashboard Mode - Color and accessibility guidelines
Dashboard Goal
Help users understand sales trends clearly by using colors that everyone can see, including people with color blindness.
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Color and accessibility guidelines in Tableau - Dashboard Guide
Sample Data
| Region | Quarter | Sales |
|---|---|---|
| North | Q1 | 150 |
| South | Q1 | 200 |
| East | Q1 | 180 |
| West | Q1 | 170 |
| North | Q2 | 160 |
| South | Q2 | 210 |
| East | Q2 | 190 |
| West | Q2 | 175 |
Dashboard Components
- KPI Card: Total Sales
Formula: SUM([Sales]) = 1435
Shows total sales across all regions and quarters. - Bar Chart: Sales by Region
Uses color palette safe for color blindness (blue, orange, gray, green).
Each bar represents total sales per region.
Formula: SUM([Sales]) grouped by [Region]. - Line Chart: Sales Trend by Quarter
Lines use distinct shapes and colors to differentiate regions.
Formula: SUM([Sales]) grouped by [Quarter] and [Region]. - Color Legend: Shows color meaning with text labels.
Colors chosen with high contrast and tested for color blindness.
Dashboard Layout
+----------------------+----------------------+ | KPI Card | Color Legend | +----------------------+----------------------+ | Bar Chart | | | +----------------------------------------------+ | Line Chart | | | +----------------------------------------------+
Interactivity
A region filter lets users select one or more regions. When a region is selected, the KPI card, bar chart, and line chart update to show only data for those regions. The color legend remains static to keep color meaning clear.
Self Check
If you add a filter to show only the 'South' region, which components update?
- KPI Card updates to show total sales for South only.
- Bar Chart updates to show sales for South only.
- Line Chart updates to show sales trend for South only.
- Color Legend does not change.
Key Result
Sales dashboard using color-blind friendly palette and clear labels for accessible insights.