#3f6b97 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	5.58:1	pass	pass	fail	AAA: use #35597e as the text (7.29:1)
Aaon black	3.76:1	fail	pass	fail	AA: use #4778a9 as the text (4.53:1) AAA: use #6f99c3 as the text (7.02:1) AA: or shift the background to #e8e8e8 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f6b97 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

0b3d91 4b6a9b 00a878 ffffff 0b1f3a

Fintech Trust

Open in tool →

Navy signals custody and stability; the green accent is money moving the right way. No red anywhere except errors.

Cool Clean ModernFintech

Fonts for this mood

#3f6b97 reads as cool, modern. The font library is tagged with the same vocabulary:

Modern fonts →

mcpConnect your agent — build around #3f6b97

live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp

claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp

try this prompt

›analyze #3f6b97 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f6b97-9cabc4-df514e-1f202d-e9f1f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md