Light Power BI theme

Cool Workspace Power BI theme

Cool neutral light Power BI theme: steel-blue lead, deep navy and teal series on a cool grey page, for maintenance, FinOps and operations.

By Nawaf Sharaf · Founder & Reliability Engineer · Updated November 9, 2026

Free for commercial use

Cool Workspace theme applied to the Maintenance & Asset Reliability template

Shown on the Maintenance & Asset Reliability template.

Power BI Desktop: Design ribbon → Import theme. Power BI service: View → Theme pane.

Design with this theme →

About the palette

Cool Workspace sits on a cool grey page #F1F3F5 with white cards and a steel-blue lead #3B6EA5. Deep navy #2E4F6E and teal #3E9A9A follow, then berry #B0507A for contrast, an engineering look for maintenance, reliability and cloud-cost pages.

Grey #7D8790 is in the list for baseline or budget series. The steel blue and navy are close in hue, so use them for actual and target of the same measure. Text is #1A1D21 at 16.9:1.

Palette profile

Computed from the colours on this page, not written by hand: hue spread, lightness range, contrast and a colour-vision simulation of the first six chart colours.

Best for

Clustered and stacked charts with up to six series (6 hue families); add data labels to the pairs listed below.
Thin line charts and sparklines on white cards: every chart colour reaches 3.3:1 or more.
Variance charts, waterfalls and KPI deltas: good #2F7A54 and bad #B3341F are 141° apart in hue.

Colour-vision simulation

Deuteranopia: series 1 and 5 (#3B6EA5, #5A4FA0)
Give those series data labels or direct labels instead of relying on the legend.

Chart colours: 8, in 6 hue families
Lightness range: 31–53 %
Text contrast: 15.2:1
Muted text: 6.3:1
Weakest chart colour: 3.3:1 on cards
Near-grey series: 1
Closest catalog palettes: Lab Bench (0.046)Harbour Mist (0.051)Clear Sight (0.061)

Colours and contrast

Contrast ratios are measured against the card (surface) colour, where visuals sit. Text needs 4.5:1; graphics need 3:1.

Theme colours and contrast against the card colour
Role	Colour	Contrast on card	Check
Page background	#F1F3F5	—	base
Card / surface	#FFFFFF	—	base
Text	#1A1D21	16.91:1	AA text
Muted text	#53595F	7.09:1	AA text
Accent	#3B6EA5	5.30:1	≥ 3:1
Good	#2F7A54	5.21:1	≥ 3:1
Neutral	#956400	5.12:1	≥ 3:1
Bad	#B3341F	6.13:1	≥ 3:1
Data colour 1	#3B6EA5	5.30:1	≥ 3:1
Data colour 2	#2E4F6E	8.54:1	≥ 3:1
Data colour 3	#3E9A9A	3.34:1	≥ 3:1
Data colour 4	#B0507A	4.91:1	≥ 3:1
Data colour 5	#5A4FA0	6.86:1	≥ 3:1
Data colour 6	#9A8A2E	3.47:1	≥ 3:1
Data colour 7	#7D8790	3.66:1	≥ 3:1
Data colour 8	#C2603A	4.18:1	≥ 3:1

Theme JSON excerpt

The downloaded file also includes text classes, visual styles and slicer, table and card defaults.

cool-workspace-theme.json

{
  "name": "Cool Workspace",
  "dataColors": [
    "#3B6EA5",
    "#2E4F6E",
    "#3E9A9A",
    "#B0507A",
    "#5A4FA0",
    "#9A8A2E",
    "#7D8790",
    "#C2603A"
  ],
  "background": "#F1F3F5",
  "foreground": "#1A1D21",
  "tableAccent": "#3B6EA5",
  "good": "#2F7A54",
  "neutral": "#956400",
  "bad": "#B3341F"
}

Import this theme in Power BI Desktop

1
Download the theme
Use the Download theme JSON button above. The file is a few kilobytes and contains no images.
2
Import the theme
In Power BI Desktop open the Design ribbon → Import theme and select the file. In the Power BI service use View → Theme pane. Older Desktop builds: View → Themes → Browse for themes.
3
Check visual overrides
Visuals with manually set colours keep them. Use Format → Reset to default on those visuals to pick up the theme.
4
Add a matching background
Open the design studio with Cool Workspace selected to build a page background in the same colours.

VizForge AI · custom visuals

Generate a custom visual for this slot

Need a chart Power BI doesn't have? Pick a slot from the sample report above and VizForge AI writes a custom visual (.pbiviz, with TypeScript source) sized to it and drawn in the Cool Workspace colours.

Slot to replace

Column chart · 656×208 px

1, 2 or 5 credits depending on the brief · 5 free on signup. Sign in or create a free account on the next screen; the brief is saved for 30 minutes.

Brief sent to the generator (you can edit it there)

A Power BI column visual titled "Work orders by type and month". It sits in a 656×208 px slot on a designed report page. Match the report's brand: data colours #3B6EA5, #2E4F6E, #3E9A9A, #B0507A, #5A4FA0, #9A8A2E; background #FFFFFF; text #1A1D21; font Segoe UI. Transparent visual background so the page design shows through; no visual border. The report uses the Cool Workspace Power BI theme.

Templates in this theme

Pick the right page for Power BI themes

Download · start hereFree Power BI themes80 contrast-checked theme JSON files, light and dark.
GenerateTheme LabBuild a theme JSON from your own brand colours.
Step by stepHow to import a themeDesign ribbon → Import theme, and what to do when colours don't change.
ReferenceTheme JSON guideWhat each field in the theme file controls.
2026 changesFluent 2, Classic 2026 and style presetsHow base themes layer under your JSON, 1920×1080 pages, the Update theme banner.
Compare toolsPower BI design tools, comparedTheme generators, page designers and kits, with sourced, dated facts.
Starter kitStarter Report KitYour brand as theme JSON, backgrounds, a PBIP with sample data and AI rules, in one zip.
AIAI theme generatorDescribe the look in words; get a contrast-checked theme JSON previewed on a real template.

Backgrounds to pair with Cool Workspace

Light page backgrounds that sit well under this palette. Each background page has its own theme download, or keep Cool Workspace and set the background image on top.

Need a chart Power BI doesn’t ship?

Theme colours apply to custom visuals too. Describe the chart in plain English and VizForge generates it as a .pbiviz with its TypeScript source; in the design studio, the brief for a visual slot carries this palette. See the visual catalog.

Generate a custom visual with AI · starts free →

Questions about this theme

Is the Cool Workspace theme accessible?

Yes. Text and muted text meet WCAG AA (4.5:1) on both the page and card colours, and every data and status colour reaches at least 3:1 against the cards. In a colour-vision simulation 1 pair among the first six chart colours look alike; the palette profile lists them so you can add data labels. The full contrast table is on this page.

Which fonts does the Cool Workspace theme use?

It uses Segoe UI. All of them are in Power BI's own font list, so the report renders the same in Power BI Desktop and in the Power BI service.

How do I import a theme JSON into Power BI?

In Power BI Desktop go to the Design ribbon → Import theme and select the downloaded .json file; in the Power BI service use View → Theme pane (older Desktop builds: View → Themes → Browse for themes). The data colours, text classes and visual defaults apply to every page of the report.

Which theme JSON schema do these themes use?

They are compiled against the current report theme schema (reportThemeSchema-2.159) and include name, dataColors, background, foreground, tableAccent, good/neutral/bad, textClasses and visualStyles.

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Background images

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Design a page in Cool Workspace

Start the design studio with this palette, lay out your page and export a background, the theme JSON and a PBIP project that all match.

Open in the design studio →Browse templates

The design studio for Power BI. Free, in your browser, no sign-up.