#665fec as text	Ratio	AA	AA large	AAA	Fix
Aaon white	4.76:1	pass	pass	fail	AAA: use #3f36e7 as the text (7.26:1)
Aaon black	4.41:1	fail	pass	fail	AA: use #6b64ed as the text (4.67:1) AAA: use #928df2 as the text (7.31:1) AA: or shift the background to #fafafa (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 #665fec as the background.

Brands using this color

Calmaccent · #6461e0 · Δ1.91

Fonts for this mood

#665fec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →

mcpConnect your agent — build around #665fec

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 #665fec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/665fec-a39cc4-dfa04e-261f2d-e9edf1?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