Color

#11256e

#11256e
hex#11256e
rgbrgb(17, 37, 110)
hslhsl(227, 73%, 25%)
oklchoklch(0.303 0.129 266.4)
Closest name: Black Sea Night (#052462)Relative luminance 0.0257

Colors that go with #11256e

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 →

#6e5a11

#11546e · #2c116e

#6e1125 · #256e11

Split-complementary

Open in tool →

#6e2c11 · #546e11

#6e1154 · #6e5a11 · #116e2c

Contrast

#11256e as textRatioAAAA largeAAAFix
Aaon white
13.87:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #4a6be3 as the text (4.5:1)
  • AAA: use #7b93ea as the text (7.2:1)
  • AA: or shift the background to #949494 (4.57:1)
  • AAA: or shift the background to #bababa (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #11256e as the background.

Brands using this color

Fonts for this mood

#11256e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #11256e
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 #11256e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/11256e-9ca0c4-df7a4e-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