Color

#377773

#377773
hex#377773
rgbrgb(55, 119, 115)
hslhsl(176, 37%, 34%)
oklchoklch(0.526 0.066 189.9)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1524

Colors that go with #377773

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.

Real palettes that use #377773

Tints & shades

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

Harmonies

Complementary

Open in tool →

#77373b

#377752 · #375b77

#733777 · #777337

Split-complementary

Open in tool →

#77375b · #775237

#523777 · #77373b · #5b7737

Contrast

#377773 as textRatioAAAA largeAAAFix
Aaon white
5.19:1passpassfail
  • AAA: use #2b5e5b as the text (7.36:1)
Aaon black
4.05:1failpassfail
  • AA: use #3b817d as the text (4.62:1)
  • AAA: use #4ca49e as the text (7.11:1)
  • 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 #377773 as the background.

Brands using this color

mcpConnect your agent — build around #377773
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 #377773 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/377773-a2bdbe-d4599d-1f282d-e9f1ed?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