#66ffa3 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	1.28:1	fail	fail	fail	AA: use #008535 as the text (4.77:1) AAA: use #006629 as the text (7.16:1) AA: or shift the background to #636363 (4.69:1) AAA: or shift the background to #474747 (7.26:1)
Aaon black	16.4:1	pass	pass	pass	Passes AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66ffa3 as the background.

Brands using this color

Denosecondary · #70ffaf · Δ1.749

Fonts for this mood

#66ffa3 reads as vivid, light, clean. The font library is tagged with the same vocabulary:

Clean fonts →

mcpConnect your agent — build around #66ffa3

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 #66ffa3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66ffa3-a2beb0-ca59d4-1f2d2b-eaf1e9?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