#121321 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	18.41:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.14:1	fail	fail	fail	AA: use #6b6fae as the text (4.51:1) AAA: use #8f93c1 as the text (7.11:1) AA: or shift the background to #808080 (4.66:1) AAA: or shift the background to #a1a1a1 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #121321 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

c9a227 7c8aa5 34d399 0c1222 e8edf5

Ledger Dark

Open in tool →

Gold on midnight is the private-banking cue; the mint accent keeps it from feeling old-money stuffy.

Dark Luxury TechnicalFintech

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

#121321 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

Luxury fonts →Bold fonts →

mcpConnect your agent — build around #121321

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 #121321 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/121321-9e9cc4-df8f4e-241f2d-e9eef1?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