Color

#289f3a

#289f3a
hex#289f3a
rgbrgb(40, 159, 58)
hslhsl(129, 60%, 39%)
oklchoklch(0.617 0.174 145.2)
Closest name: Green Revolution (#009944)Relative luminance 0.2555

Colors that go with #289f3a

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 →

#9f288d

#529f28 · #289f75

#3a289f · #9f3a28

Split-complementary

Open in tool →

#75289f · #9f2852

#28529f · #9f288d · #9f7528

Contrast

#289f3a as textRatioAAAA largeAAAFix
Aaon white
3.44:1failpassfail
  • AA: use #228731 as the text (4.59:1)
  • AAA: use #1a6625 as the text (7.07:1)
  • AA: or shift the background to #242424 (4.52:1)
Aaon black
6.11:1passpassfail
  • AAA: use #2caf40 as the text (7.31:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #289f3a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #289f3a
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 #289f3a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/289f3a-a2bea9-ae4edf-1f2d27-ecf1e9?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