Color

#28776d

#28776d
hex#28776d
rgbrgb(40, 119, 109)
hslhsl(172, 50%, 31%)
oklchoklch(0.519 0.077 183.4)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1475

Colors that go with #28776d

Charcoal, Medium Violet Red and Cobalt Blue 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 #28776d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#772832

#287745 · #285a77

#6c2877 · #776c28

Split-complementary

Open in tool →

#77285a · #774528

#452877 · #772832 · #5a7728

Contrast

#28776d as textRatioAAAA largeAAAFix
Aaon white
5.32:1passpassfail
  • AAA: use #206057 as the text (7.31:1)
Aaon black
3.95:1failpassfail
  • AA: use #2b8276 as the text (4.56:1)
  • AAA: use #38a899 as the text (7.23:1)
  • AA: or shift the background to #ededed (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28776d as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #28776d
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 #28776d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28776d-a2bebe-d459a5-1f292d-e9f1ec?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