Color

#0a15ae

#0a15ae
hex#0a15ae
rgbrgb(10, 21, 174)
hslhsl(236, 89%, 36%)
oklchoklch(0.355 0.224 265.6)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0366

Colors that go with #0a15ae

Charcoal, Crimson and Cornflower 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 →

#aea30a

#0a67ae · #510aae

#ae0a15 · #15ae0a

Split-complementary

Open in tool →

#ae510a · #67ae0a

#ae0a67 · #aea30a · #0aae51

Contrast

#0a15ae as textRatioAAAA largeAAAFix
Aaon white
12.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #5b65f5 as the text (4.62:1)
  • AAA: use #878ef8 as the text (7.25:1)
  • AA: or shift the background to #9e9e9e (4.53:1)
  • AAA: or shift the background to #c7c7c7 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a15ae 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

#0a15ae reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a15ae
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 #0a15ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a15ae-9e9cc4-df8f4e-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