#211b23 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	16.86:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.25:1	fail	fail	fail	AA: use #856d8d as the text (4.57:1) AAA: use #a28fa8 as the text (7.03:1) AA: or shift the background to #858585 (4.57:1) AAA: or shift the background to #a8a8a8 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #211b23 as the background.

Brands using this color

Palettes built around it

ff6b35 ffd166 06d6a0 ffffff 1f1f1f

Fresh Juice

Open in tool →

Orange, mango and mint — a sugar rush; keep the type black so it stays legible under all that color.

Playful Vivid LightFood

58cc02 1cb0f6 ff9600 ffffff 1c1c1c

Learning App

Open in tool →

Green, blue and orange at full saturation: the gamified-learning look, where every color is a reward.

Playful Vivid FriendlyEducation

ff8c00 3b82f6 22c55e fff8e7 1d1d1d

Playground

Open in tool →

Orange, blue and green — the colors of playground equipment; loud, cheerful, obviously for kids.

Bold Playful WarmKids

Fonts for this mood

#211b23 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

Luxury fonts →Bold fonts →

mcpConnect your agent — build around #211b23

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 #211b23 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/211b23-bc9fc1-afcb62-2d1f2b-ebe9f1?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