Color

#0f1bfa

#0f1bfa
hex#0f1bfa
rgbrgb(15, 27, 250)
hslhsl(237, 96%, 52%)
oklchoklch(0.459 0.299 265.2)
Closest name: blue (#0000ff)Relative luminance 0.0779

Colors that go with #0f1bfa

Charcoal, Crimson and Cobalt 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 →

#faee0f

#0f90fa · #790ffa

#fa0f1b · #1bfa0f

Split-complementary

Open in tool →

#fa790f · #90fa0f

#fa0f90 · #faee0f · #0ffa79

Contrast

#0f1bfa as textRatioAAAA largeAAAFix
Aaon white
8.21:1passpasspassPasses AAA — no fix needed.
Aaon black
2.56:1failfailfail
  • AA: use #5a62fc as the text (4.59:1)
  • AAA: use #878dfd as the text (7.26:1)
  • AA: or shift the background to #c2c2c2 (4.61:1)
  • AAA: or shift the background to #ededed (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f1bfa as the background.

Brands using this color

Fonts for this mood

#0f1bfa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f1bfa
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 #0f1bfa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f1bfa-9f9cc4-df924e-251f2d-e9edf1?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