#212a3b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	14.39:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.46:1	fail	fail	fail	AA: use #5c75a3 as the text (4.53:1) AAA: use #8396b9 as the text (7.03:1) AA: or shift the background to #919191 (4.57:1) AAA: or shift the background to #b5b5b5 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212a3b 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

2f6690 8fa3b8 e3a72f ffffff 1b2a41

Open House

Open in tool →

Steel blue for trust, warm gold for the sold moment — an approachable brokerage that still feels established.

Clean Cool ModernReal Estate

2a9d8f 8ecae6 e9c46a f7fafc 1a2b3c

Coastal

Open in tool →

Sea-teal, sky and sand — bright without shouting; works for travel, wellness, and anything near water.

Cool Light Clean

Fonts for this mood

#212a3b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

Luxury fonts →Bold fonts →

mcpConnect your agent — build around #212a3b

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 #212a3b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212a3b-9ca5c4-df664e-211f2d-e9f0f1?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