Color

#06188e

#06188e
hex#06188e
rgbrgb(6, 24, 142)
hslhsl(232, 92%, 29%)
oklchoklch(0.316 0.187 265.3)
Closest name: Everlasting Night (#000099)Relative luminance 0.0264

Colors that go with #06188e

Crimson, Steel Blue and Charcoal 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 →

#8e7c06

#065c8e · #38068e

#8e0618 · #188e06

Split-complementary

Open in tool →

#8e3806 · #5c8e06

#8e065c · #8e7c06 · #068e38

Contrast

#06188e as textRatioAAAA largeAAAFix
Aaon white
13.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #4f65f8 as the text (4.55:1)
  • AAA: use #8090fa as the text (7.29:1)
  • AA: or shift the background to #949494 (4.53:1)
  • AAA: or shift the background to #bababa (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #06188e as the background.

Brands using this color

Fonts for this mood

#06188e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #06188e
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 #06188e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/06188e-9c9dc4-df864e-231f2d-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