#503df5 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	6.31:1	pass	pass	fail	AAA: use #422ff4 as the text (7.13:1)
Aaon black	3.33:1	fail	pass	fail	AA: use #6e5ff7 as the text (4.64:1) AAA: use #968bf9 as the text (7.36:1) AA: or shift the background to #dbdbdb (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #503df5 as the background.

Brands using this color

Stripeaccent · #533afd · Δ1.279

Fonts for this mood

#503df5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →

mcpConnect your agent — build around #503df5

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 #503df5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/503df5-a59cc4-dfa74e-271f2d-e9ecf1?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