Color

#377666

#377666
hex#377666
rgbrgb(55, 118, 102)
hslhsl(165, 36%, 34%)
oklchoklch(0.519 0.07 174.6)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1473

Colors that go with #377666

Charcoal, Medium Violet Red and Champagne 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 #377666

Tints & shades

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

Harmonies

Complementary

Open in tool →

#763747

#377647 · #376676

#663776 · #766637

Split-complementary

Open in tool →

#763766 · #764737

#473776 · #763747 · #667637

Contrast

#377666 as textRatioAAAA largeAAAFix
Aaon white
5.32:1passpassfail
  • AAA: use #2e6154 as the text (7.11:1)
Aaon black
3.95:1failpassfail
  • AA: use #3c806f as the text (4.51:1)
  • AAA: use #4ea690 as the text (7.18:1)
  • AA: or shift the background to #ededed (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 #377666 as the background.

Brands using this color

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

mcpConnect your agent — build around #377666
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 #377666 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/377666-a2beba-d459b3-1f2b2d-e9f1eb?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