Color

#287b69

#287b69
hex#287b69
rgbrgb(40, 123, 105)
hslhsl(167, 51%, 32%)
oklchoklch(0.528 0.084 175.6)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1564

Colors that go with #287b69

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 #287b69

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7b283a

#287b40 · #28647b

#69287b · #7b6928

Split-complementary

Open in tool →

#7b2864 · #7b4028

#40287b · #7b283a · #647b28

Contrast

#287b69 as textRatioAAAA largeAAAFix
Aaon white
5.09:1passpassfail
  • AAA: use #1f6052 as the text (7.36:1)
Aaon black
4.13:1failpassfail
  • AA: use #2a8370 as the text (4.58:1)
  • AAA: use #37a991 as the text (7.25:1)
  • AA: or shift the background to #f2f2f2 (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 #287b69 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 #287b69
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 #287b69 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287b69-a2bebb-d459af-1f2a2d-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