#3566bb as text	Ratio	AA	AA large	AAA	Fix
Aaon white	5.57:1	pass	pass	fail	AAA: use #2d579f as the text (7.06:1)
Aaon black	3.77:1	fail	pass	fail	AA: use #4475ca as the text (4.64:1) AAA: use #7498d8 as the text (7.23:1) AA: or shift the background to #e8e8e8 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3566bb as the background.

Brands using this color

Netflixaccent · #3860be · Δ1.71

Fonts for this mood

#3566bb reads as cool, modern. The font library is tagged with the same vocabulary:

Modern fonts →

mcpConnect your agent — build around #3566bb

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 #3566bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3566bb-9ca6c4-df644e-201f2d-e9f0f1?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