Color

#289018

#289018
hex#289018
rgbrgb(40, 144, 24)
hslhsl(112, 71%, 33%)
oklchoklch(0.573 0.178 141.4)
Closest name: Emerald (#028f1e)Relative luminance 0.2046

Colors that go with #289018

Crimson, Royal Blue and Charcoal 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 →

#801890

#649018 · #189044

#182890 · #901828

Split-complementary

Open in tool →

#441890 · #901864

#186490 · #801890 · #904418

Contrast

#289018 as textRatioAAAA largeAAAFix
Aaon white
4.12:1failpassfail
  • AA: use #268717 as the text (4.6:1)
  • AAA: use #1c6411 as the text (7.29:1)
  • AA: or shift the background to #121212 (4.54:1)
Aaon black
5.09:1passpassfail
  • AAA: use #31ae1e as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #289018 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 #289018
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 #289018 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/289018-a2bea2-864edf-1f2d23-eef1e9?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