Color

#0b72ef

#0b72ef
hex#0b72ef
rgbrgb(11, 114, 239)
hslhsl(213, 91%, 49%)
oklchoklch(0.575 0.206 257.9)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1834

Colors that go with #0b72ef

Charcoal, Crimson and Copper 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 →

#ef880b

#0be3ef · #170bef

#ef0b72 · #72ef0b

Split-complementary

Open in tool →

#ef170b · #e3ef0b

#ef0be3 · #ef880b · #0bef17

Contrast

#0b72ef as textRatioAAAA largeAAAFix
Aaon white
4.5:1failpassfail
  • AA: use #0b6fea as the text (4.69:1)
  • AAA: use #0853af as the text (7.33:1)
  • AA: or shift the background to #050505 (4.53:1)
Aaon black
4.67:1passpassfail
  • AAA: use #4b98f7 as the text (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 #0b72ef as the background.

Brands using this color

Fonts for this mood

#0b72ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b72ef
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 #0b72ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b72ef-9ca9c4-df584e-1f202d-e9f0f1?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