Color

#0b2ef4

#0b2ef4
hex#0b2ef4
rgbrgb(11, 46, 244)
hslhsl(231, 91%, 50%)
oklchoklch(0.468 0.282 264.8)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0856

Colors that go with #0b2ef4

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 →

#f4d10b

#0ba2f4 · #5d0bf4

#f40b2e · #2ef40b

Split-complementary

Open in tool →

#f45d0b · #a2f40b

#f40ba2 · #f4d10b · #0bf45d

Contrast

#0b2ef4 as textRatioAAAA largeAAAFix
Aaon white
7.75:1passpasspassPasses AAA — no fix needed.
Aaon black
2.71:1failfailfail
  • AA: use #4b65f7 as the text (4.5:1)
  • AAA: use #7b8ef9 as the text (7.08:1)
  • AA: or shift the background to #c7c7c7 (4.58:1)
  • AAA: or shift the background to #f5f5f5 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b2ef4 as the background.

Brands using this color

Fonts for this mood

#0b2ef4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b2ef4
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 #0b2ef4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b2ef4-9c9ec4-df834e-231f2d-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