Color

#0b75bc

#0b75bc
hex#0b75bc
rgbrgb(11, 117, 188)
hslhsl(204, 89%, 39%)
oklchoklch(0.546 0.139 246.7)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1642

Colors that go with #0b75bc

Charcoal, Crimson and Sienna 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 →

#bc520b

#0bbcaa · #0b1dbc

#bc0b75 · #75bc0b

Split-complementary

Open in tool →

#bc0b1d · #bcaa0b

#aa0bbc · #bc520b · #1dbc0b

Contrast

#0b75bc as textRatioAAAA largeAAAFix
Aaon white
4.9:1passpassfail
  • AAA: use #085a91 as the text (7.29:1)
Aaon black
4.28:1failpassfail
  • AA: use #0c7bc6 as the text (4.66:1)
  • AAA: use #1c9cf2 as the text (7.09:1)
  • AA: or shift the background to #f7f7f7 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b75bc as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b75bc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b75bc
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 #0b75bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b75bc-9cafc4-df4e5a-1f222d-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