Theme Studio

Power BI theme generator that checks your brand colors for accessibility.

Input a single brand color and get a complete, WCAG 2.2 AA-checked Power BI theme. Download a valid .json file that loads directly in Desktop. No JSON editing required.

Try Theme Studio free

Free tier — no card required

Editing Power BI theme JSON by hand is slow, error-prone, and doesn't check for accessibility.

I sent the brand colors to three different developers. Three weeks later we had three different themes, none of them passing WCAG AA. Now we're doing the accessibility audit before the reports even ship.

Power BI theme files are JSON documents with dozens of color properties. Getting the right color combinations for data series, backgrounds, axes, and text, and then checking every pair against WCAG 2.2 AA contrast requirements. It is a manual, repetitive process that most teams skip until it's too late. Brand colors chosen by a marketing team rarely translate directly to accessible data visualizations without careful adjustment.

Theme Studio automates the part that wastes time: generating a coherent 8-color palette from a single seed color using OKLCH color science, then checking every contrast pair automatically and surfacing failures with one-click fixes. The result is a theme file you can trust before it reaches your reports.

Everything you need to go from brand color to Power BI theme.

Theme Studio handles the color science and accessibility checking so you can focus on getting the design right, not the JSON syntax.

Seed color to full palette

Input one brand color and get a complete 8-color data palette using OKLCH color space for perceptually uniform steps. Light and dark background modes automatically adjust for contrast.

WCAG 2.2 AA contrast checking

Every color pair (data colors against backgrounds, axis labels against chart areas, text against containers) checked automatically against the 4.5:1 contrast ratio minimum. Failures are listed with one-click fixes.

Light and dark background modes

Switch between light and dark canvas backgrounds with a single toggle. The palette adjusts automatically: darker data colors on light backgrounds, lighter variants on dark ones, while keeping contrast ratios valid.

Pro: per-visual styling and typography

Pro and Power tier unlocks per-visual overrides. Control typography, conditional formatting gradients, and individual visual type colors beyond the base data palette.

Download as valid .json theme file

Export a complete, validated Power BI theme JSON file that loads directly in Desktop. The file follows Microsoft's theme schema. No manual editing required after download.

Manual palette input

Already have brand hex values? Enter up to 8 colors directly and run WCAG checking on your existing palette without regenerating from a seed.

What's included in the free tier

Unlimited theme generation from seed colors
WCAG 2.2 AA contrast checking for all color pairs
Light and dark background mode toggle
Download as Power BI .json theme file (data colors only)
Theme library: save and reload previous themes

From brand color to Power BI theme in three steps.

Input your brand's primary color
Enter a hex code or use the color picker. Theme Studio generates a complete 8-color data palette using analogous-split-complementary color theory in OKLCH space, the same color model used by modern design tools for perceptual uniformity.
Review accessibility check results
Every color combination (data colors against background, text against chart containers, axis labels) is checked against WCAG 2.2 AA (4.5:1 for normal text, 3:1 for large text and UI components). Failures are listed by pair with the measured and required contrast ratios. Click “Fix All” or address issues individually.
Download and open in Power BI Desktop
Export the validated theme as a .json file. In Power BI Desktop, go to View → Themes → Browse for themes and select the downloaded file. Your brand theme is applied immediately across all visuals.

Stop hand-editing Power BI theme JSON.

Generate a WCAG-checked theme from your brand colors in minutes. Free tier includes unlimited themes, no card required.