Color

#287b64

#287b64
hex#287b64
rgbrgb(40, 123, 100)
hslhsl(163, 51%, 32%)
oklchoklch(0.527 0.087 171)
Closest name: Amazon (#387b54)Relative luminance 0.1554

Colors that go with #287b64

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 #287b64

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7b2840

#287b3a · #28697b

#64287b · #7b6428

Split-complementary

Open in tool →

#7b2869 · #7b3a28

#3a287b · #7b2840 · #697b28

Contrast

#287b64 as textRatioAAAA largeAAAFix
Aaon white
5.11:1passpassfail
  • AAA: use #1f604e as the text (7.39:1)
Aaon black
4.11:1failpassfail
  • AA: use #2a836a as the text (4.55:1)
  • AAA: use #37a989 as the text (7.2:1)
  • AA: or shift the background to #f2f2f2 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287b64 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 #287b64
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 #287b64 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287b64-a2beb9-d459b7-1f2b2d-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