#557cfc as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.7:1	fail	pass	fail	AA: use #3b68fc as the text (4.59:1) AAA: use #043cf6 as the text (7.04:1) AA: or shift the background to #1c1c1c (4.61:1)
Aaon black	5.67:1	pass	pass	fail	AAA: use #7293fd as the text (7.31:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #557cfc as the background.

Brands using this color

Splineprimary · #4482fc · Δ1.943

Fonts for this mood

#557cfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →

mcpConnect your agent — build around #557cfc

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 #557cfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/557cfc-9ca1c4-df774e-221f2d-e9eff1?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