Color

#0a1fdb

#0a1fdb
hex#0a1fdb
rgbrgb(10, 31, 219)
hslhsl(234, 91%, 45%)
oklchoklch(0.422 0.266 265)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0616

Colors that go with #0a1fdb

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 →

#dbc60a

#0a88db · #5e0adb

#db0a1f · #1fdb0a

Split-complementary

Open in tool →

#db5e0a · #88db0a

#db0a88 · #dbc60a · #0adb5e

Contrast

#0a1fdb as textRatioAAAA largeAAAFix
Aaon white
9.41:1passpasspassPasses AAA — no fix needed.
Aaon black
2.23:1failfailfail
  • AA: use #5565f7 as the text (4.59:1)
  • AAA: use #808cf9 as the text (7.04:1)
  • AA: or shift the background to #b5b5b5 (4.59:1)
  • AAA: or shift the background to #e0e0e0 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a1fdb 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

#0a1fdb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a1fdb
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 #0a1fdb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a1fdb-9d9cc4-df8a4e-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