#304cd9 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	6.64:1	pass	pass	fail	AAA: use #2845d7 as the text (7.19:1)
Aaon black	3.16:1	fail	pass	fail	AA: use #576ee0 as the text (4.71:1) AAA: use #8293e8 as the text (7.29:1) AA: or shift the background to #d6d6d6 (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 #304cd9 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

1d4ed8 64748b f59e0b ffffff 1e293b

Campus

Open in tool →

Institutional blue with a highlighter-amber accent — trustworthy for parents, lively enough for students.

Friendly Cool CleanEducation

Fonts for this mood

#304cd9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →

mcpConnect your agent — build around #304cd9

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 #304cd9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/304cd9-9c9ec4-df814e-231f2d-e9eef1?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