Color

#377abe

#377abe
hex#377abe
rgbrgb(55, 122, 190)
hslhsl(210, 55%, 48%)
oklchoklch(0.569 0.125 251.3)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1845

Colors that go with #377abe

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 →

#be7a37

#37bebe · #3737be

#be377a · #7abe37

Split-complementary

Open in tool →

#be3737 · #bebe37

#be37be · #be7a37 · #37be37

Contrast

#377abe as textRatioAAAA largeAAAFix
Aaon white
4.48:1failpassfail
  • AA: use #3678ba as the text (4.61:1)
  • AAA: use #28598a as the text (7.28:1)
  • AA: or shift the background to #050505 (4.55:1)
Aaon black
4.69:1passpassfail
  • AAA: use #659cd2 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #377abe as the background.

Brands using this color

Fonts for this mood

#377abe reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #377abe
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 #377abe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/377abe-9cabc4-df514e-1f202d-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