Color

#289f56

#289f56
hex#289f56
rgbrgb(40, 159, 86)
hslhsl(143, 60%, 39%)
oklchoklch(0.621 0.15 151.6)
Closest name: Green Revolution (#009944)Relative luminance 0.2592

Colors that go with #289f56

Charcoal, Blue and Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9f2871

#369f28 · #289f91

#56289f · #9f5628

Split-complementary

Open in tool →

#91289f · #9f2836

#28369f · #9f2871 · #9f9128

Contrast

#289f56 as textRatioAAAA largeAAAFix
Aaon white
3.4:1failpassfail
  • AA: use #228748 as the text (4.54:1)
  • AAA: use #1a6637 as the text (7:1)
  • AA: or shift the background to #242424 (4.57:1)
Aaon black
6.18:1passpassfail
  • AAA: use #2bab5c as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #289f56 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 #289f56
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 #289f56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/289f56-a2beb0-c859d4-1f2d2b-eaf1e9?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