Color

#0b7bcb

#0b7bcb
hex#0b7bcb
rgbrgb(11, 123, 203)
hslhsl(205, 90%, 42%)
oklchoklch(0.57 0.151 248.4)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1855

Colors that go with #0b7bcb

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 →

#cb5b0b

#0bcbbb · #0b1bcb

#cb0b7b · #7bcb0b

Split-complementary

Open in tool →

#cb0b1b · #cbbb0b

#bb0bcb · #cb5b0b · #1bcb0b

Contrast

#0b7bcb as textRatioAAAA largeAAAFix
Aaon white
4.46:1failpassfail
  • AA: use #0a78c7 as the text (4.64:1)
  • AAA: use #085b96 as the text (7.13:1)
  • AA: or shift the background to #050505 (4.57:1)
Aaon black
4.71:1passpassfail
  • AAA: use #209bf3 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b7bcb as the background.

Brands using this color

Fonts for this mood

#0b7bcb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b7bcb
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 #0b7bcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b7bcb-9cafc4-df4e58-1f212d-e9f1f0?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