Color

#287674

#287674
hex#287674
rgbrgb(40, 118, 116)
hslhsl(178, 49%, 31%)
oklchoklch(0.519 0.075 192.7)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1467

Colors that go with #287674

Charcoal, Crimson 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 #287674

Tints & shades

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

Harmonies

Complementary

Open in tool →

#76282b

#28764c · #285276

#732876 · #767328

Split-complementary

Open in tool →

#762852 · #764c28

#4c2876 · #76282b · #527628

Contrast

#287674 as textRatioAAAA largeAAAFix
Aaon white
5.34:1passpassfail
  • AAA: use #215f5d as the text (7.34:1)
Aaon black
3.93:1failpassfail
  • AA: use #2c817e as the text (4.55:1)
  • AAA: use #39a7a4 as the text (7.24:1)
  • AA: or shift the background to #ededed (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287674 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #287674
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 #287674 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287674-a2bcbe-d45999-1f282d-e9f1ed?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