#a3b59b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	2.18:1	fail	fail	fail	AA: use #657b5b as the text (4.63:1) AAA: use #4a5b43 as the text (7.32:1) AA: or shift the background to #424242 (4.61:1) AAA: or shift the background to #242424 (7.13:1)
Aaon black	9.64:1	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 #a3b59b 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

e8c170 a8b5a0 f28e6b 1f2a24 f1ede4

Chalkboard

Open in tool →

Slate green with chalk cream and a coral — nostalgic without being twee.

Dark Muted WarmEducation

mcpConnect your agent — build around #a3b59b

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 #a3b59b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a3b59b-a7bea2-6e4edf-1f2d21-eff1e9?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