Color

#377586

#377586
hex#377586
rgbrgb(55, 117, 134)
hslhsl(193, 42%, 37%)
oklchoklch(0.528 0.069 218.3)
Closest name: Calypso (#3d7188)Relative luminance 0.1526

Colors that go with #377586

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.

Real palettes that use #377586

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#864837

#378670 · #374d86

#863775 · #758637

Split-complementary

Open in tool →

#86374d · #867037

#703786 · #864837 · #4d8637

Contrast

#377586 as textRatioAAAA largeAAAFix
Aaon white
5.18:1passpassfail
  • AAA: use #2c5f6d as the text (7.08:1)
Aaon black
4.05:1failpassfail
  • AA: use #3b7e91 as the text (4.58:1)
  • AAA: use #4ea0b7 as the text (7.04:1)
  • AA: or shift the background to #f0f0f0 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #377586 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#377586 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #377586
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 #377586 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/377586-a2b5be-df4e75-1f242d-e9f1ef?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