#21733b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	5.87:1	pass	pass	fail	AAA: use #1d6333 as the text (7.28:1)
Aaon black	3.58:1	fail	pass	fail	AA: use #278645 as the text (4.58:1) AAA: use #31aa58 as the text (7.02:1) AA: or shift the background to #e3e3e3 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #21733b as the background.

Brands using this color

Clerkprimary · #007232 · Δ1.834

Fonts for this mood

#21733b reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

Luxury fonts →Bold fonts →

mcpConnect your agent — build around #21733b

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 #21733b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/21733b-a2beae-c059d4-1f2d2a-ebf1e9?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