Color

#2278bf

#2278bf
hex#2278bf
rgbrgb(34, 120, 191)
hslhsl(207, 70%, 44%)
oklchoklch(0.559 0.135 248.5)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1753

Colors that go with #2278bf

Charcoal, Crimson and Amber 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 →

#bf6822

#22bfb7 · #222abf

#bf2278 · #78bf22

Split-complementary

Open in tool →

#bf222a · #bfb722

#b722bf · #bf6822 · #2abf22

Contrast

#2278bf as textRatioAAAA largeAAAFix
Aaon white
4.66:1passpassfail
  • AAA: use #195a8f as the text (7.24:1)
Aaon black
4.51:1passpassfail
  • AAA: use #499bdf 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 #2278bf as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2278bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2278bf
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 #2278bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2278bf-9cadc4-df4e53-1f212d-e9f1f1?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