Color

#287763

#287763
hex#287763
rgbrgb(40, 119, 99)
hslhsl(165, 50%, 31%)
oklchoklch(0.515 0.083 173)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1455

Colors that go with #287763

Charcoal, Crimson and Medium Violet Red 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 #287763

Tints & shades

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

Harmonies

Complementary

Open in tool →

#77283b

#28773b · #286377

#632877 · #776328

Split-complementary

Open in tool →

#772863 · #773b28

#3b2877 · #77283b · #637728

Contrast

#287763 as textRatioAAAA largeAAAFix
Aaon white
5.37:1passpassfail
  • AAA: use #216353 as the text (7.06:1)
Aaon black
3.91:1failpassfail
  • AA: use #2b826c as the text (4.51:1)
  • AAA: use #38a88c as the text (7.15:1)
  • AA: or shift the background to #ebebeb (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287763 as the background.

Brands using this color

mcpConnect your agent — build around #287763
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 #287763 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287763-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