Color

#289f65

#289f65
hex#289f65
rgbrgb(40, 159, 101)
hslhsl(151, 60%, 39%)
oklchoklch(0.624 0.135 156.8)
Closest name: Bulma Hair (#359e6b)Relative luminance 0.2619

Colors that go with #289f65

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 →

#9f2861

#289f2a · #289d9f

#65289f · #9f6528

Split-complementary

Open in tool →

#9f289d · #9f2a28

#2a289f · #9f2861 · #9d9f28

Contrast

#289f65 as textRatioAAAA largeAAAFix
Aaon white
3.37:1failpassfail
  • AA: use #218353 as the text (4.73:1)
  • AAA: use #18623e as the text (7.35:1)
  • AA: or shift the background to #242424 (4.61:1)
Aaon black
6.24:1passpassfail
  • AAA: use #2bab6d as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #289f65 as the background.

Brands using this color

mcpConnect your agent — build around #289f65
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 #289f65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/289f65-a2beb4-d459d0-1f2d2c-e9f1ea?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