#516376 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	6.18:1	pass	pass	fail	AAA: use #48596a as the text (7.21:1)
Aaon black	3.4:1	fail	pass	fail	AA: use #61778f as the text (4.54:1) AAA: use #8698ac as the text (7.1:1) AA: or shift the background to #dedede (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516376 as the background.

Brands using this color

mcpConnect your agent — build around #516376

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 #516376 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516376-9cabc4-df534e-1f202d-e9f1f1?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