Color

#03124a

#03124a
hex#03124a
rgbrgb(3, 18, 74)
hslhsl(227, 92%, 15%)
oklchoklch(0.219 0.105 264.7)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0095

Colors that go with #03124a

Charcoal, Rust and Sea Green 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 →

#493a03

#033549 · #170349

#490312 · #124903

Split-complementary

Open in tool →

#491703 · #354903

#490335 · #493a03 · #034917

Contrast

#03124a as textRatioAAAA largeAAAFix
Aaon white
17.66:1passpasspassPasses AAA — no fix needed.
Aaon black
1.19:1failfailfail
  • AA: use #4068f7 as the text (4.54:1)
  • AAA: use #7692f9 as the text (7.25:1)
  • AA: or shift the background to #828282 (4.59:1)
  • AAA: or shift the background to #a3a3a3 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03124a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#03124a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03124a
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 #03124a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03124a-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