#307c8d as text	Ratio	AA	AA large	AAA	Fix
Aaon white	4.78:1	pass	pass	fail	AAA: use #245e6a as the text (7.28:1)
Aaon black	4.39:1	fail	pass	fail	AA: use #317f90 as the text (4.57:1) AAA: use #40a4ba as the text (7.24:1) AA: or shift the background to #fafafa (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #307c8d as the background.

Brands using this color

Perplexityprimary · #20808d · Δ1.399

Fonts for this mood

#307c8d reads as cool, modern. The font library is tagged with the same vocabulary:

Modern fonts →

mcpConnect your agent — build around #307c8d

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 #307c8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/307c8d-a2b6be-df4e7a-1f252d-e9f1ef?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