Color

#0a124d

#0a124d
hex#0a124d
rgbrgb(10, 18, 77)
hslhsl(233, 77%, 17%)
oklchoklch(0.226 0.107 269)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0103

Colors that go with #0a124d

Blue Violet, Charcoal 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 →

#4d450a

#0a334d · #240a4d

#4d0a12 · #124d0a

Split-complementary

Open in tool →

#4d240a · #334d0a

#4d0a33 · #4d450a · #0a4d24

Contrast

#0a124d as textRatioAAAA largeAAAFix
Aaon white
17.4:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #5869e9 as the text (4.61:1)
  • AAA: use #8592ef as the text (7.36:1)
  • AA: or shift the background to #828282 (4.53:1)
  • AAA: or shift the background to #a6a6a6 (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 #0a124d 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

#0a124d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a124d
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 #0a124d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a124d-9c9cc4-df884e-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