Color

#287669

#287669
hex#287669
rgbrgb(40, 118, 105)
hslhsl(170, 49%, 31%)
oklchoklch(0.515 0.078 180)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1443

Colors that go with #287669

Charcoal, Medium Violet Red and Copper 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 #287669

Tints & shades

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

Harmonies

Complementary

Open in tool →

#762835

#287642 · #285c76

#692876 · #766928

Split-complementary

Open in tool →

#76285c · #764228

#422876 · #762835 · #5c7628

Contrast

#287669 as textRatioAAAA largeAAAFix
Aaon white
5.4:1passpassfail
  • AAA: use #226358 as the text (7.01:1)
Aaon black
3.89:1failpassfail
  • AA: use #2e8576 as the text (4.73:1)
  • AAA: use #39a795 as the text (7.14:1)
  • AA: or shift the background to #ebebeb (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287669 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #287669
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 #287669 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287669-a2bebd-d459a9-1f292d-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