#9b99ff as text	Ratio	AA	AA large	AAA	Fix
Aaon white	2.5:1	fail	fail	fail	AA: use #5f5cff as the text (4.71:1) AAA: use #312eff as the text (7.08:1) AA: or shift the background to #383838 (4.69:1) AAA: or shift the background to #171717 (7.17:1)
Aaon black	8.39:1	pass	pass	pass	Passes AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #9b99ff as the background.

Brands using this color

Spotifysecondary · #9e9eff · Δ1.383

Fonts for this mood

#9b99ff reads as cool, vivid, light. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →Clean fonts →

mcpConnect your agent — build around #9b99ff

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 #9b99ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/9b99ff-a19cc4-df9b4e-261f2d-e9edf1?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