#03213f as text	Ratio	AA	AA large	AAA	Fix
Aaon white	16.24:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.29:1	fail	fail	fail	AA: use #0b75e0 as the text (4.64:1) AAA: use #3c99f6 as the text (7.08:1) AA: or shift the background to #878787 (4.52:1) AAA: or shift the background to #ababab (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03213f 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

0b3d91 4b6a9b 00a878 ffffff 0b1f3a

Fintech Trust

Open in tool →

Navy signals custody and stability; the green accent is money moving the right way. No red anywhere except errors.

Cool Clean ModernFintech

2563eb 93c5fd 16a34a ffffff 14213d

Telehealth

Open in tool →

Friendly blue with a soft tint and a green all-clear — approachable care with a tech backbone.

Modern Cool FriendlyHealth

Fonts for this mood

#03213f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →Luxury fonts →Bold fonts →

mcpConnect your agent — build around #03213f

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 #03213f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03213f-9cabc4-df514e-1f202d-e9f1f1?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