Color

#12276e

#12276e
hex#12276e
rgbrgb(18, 39, 110)
hslhsl(226, 72%, 25%)
oklchoklch(0.308 0.126 266.2)
Closest name: Black Sea Night (#052462)Relative luminance 0.0271

Colors that go with #12276e

Charcoal, Steel Blue and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#6e5812

#12556e · #2a126e

#6e1227 · #276e12

Split-complementary

Open in tool →

#6e2a12 · #556e12

#6e1255 · #6e5812 · #126e2a

Contrast

#12276e as textRatioAAAA largeAAAFix
Aaon white
13.63:1passpasspassPasses AAA — no fix needed.
Aaon black
1.54:1failfailfail
  • AA: use #4b6ee2 as the text (4.63:1)
  • AAA: use #7792e9 as the text (7.07:1)
  • AA: or shift the background to #969696 (4.61:1)
  • AAA: or shift the background to #bababa (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 #12276e as the background.

Brands using this color

Fonts for this mood

#12276e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12276e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #12276e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12276e-9ca1c4-df774e-221f2d-e9eff1?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