#5866ca as text	Ratio	AA	AA large	AAA	Fix
Aaon white	5.04:1	pass	pass	fail	AAA: use #3c4bbe as the text (7.14:1)
Aaon black	4.17:1	fail	pass	fail	AA: use #606dcd as the text (4.57:1) AAA: use #8790d9 as the text (7.02:1) AA: or shift the background to #f2f2f2 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5866ca as the background.

Brands using this color

Linearprimary · #5e6ad2 · Δ1.789

Fonts for this mood

#5866ca reads as cool, modern. The font library is tagged with the same vocabulary:

Modern fonts →

mcpConnect your agent — build around #5866ca

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 #5866ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5866ca-9c9cc4-df884e-241f2d-e9eef1?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