#131c2a as text	Ratio	AA	AA large	AAA	Fix
Aaon white	17.11:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.23:1	fail	fail	fail	AA: use #5377b2 as the text (4.65:1) AAA: use #7d98c5 as the text (7.17:1) AA: or shift the background to #858585 (4.64:1) AAA: or shift the background to #a6a6a6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #131c2a as the background.

Brands using this color

Palettes built around it

4f46e5 6b7280 10b981 ffffff 111827

Indigo SaaS

Open in tool →

The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states.

Modern Cool CleanSaas

0f1b2d 7d93a8 0ea5e9 ffffff

Arctic

Open in tool →

Navy type on white with an ice-blue accent: crisp and corporate without going grey.

Clean Cool Minimal

1e40af 111827 fb7185 ffffff

Cobalt Pop

Open in tool →

One deep cobalt and one hot pink on white — a two-accent system for launches and campaign pages that need punch.

Bold Cool Vivid Modern

Fonts for this mood

#131c2a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

Luxury fonts →Bold fonts →Modern fonts →

mcpConnect your agent — build around #131c2a

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 #131c2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131c2a-9ca7c4-df624e-201f2d-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