Color

#288a19

#288a19
hex#288a19
rgbrgb(40, 138, 25)
hslhsl(112, 69%, 32%)
oklchoklch(0.556 0.171 141.3)
Closest name: Forest Green (#228b22)Relative luminance 0.187

Colors that go with #288a19

Royal Blue, Charcoal 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 →

#7b198a

#618a19 · #198a43

#19288a · #8a1928

Split-complementary

Open in tool →

#43198a · #8a1961

#19618a · #7b198a · #8a4319

Contrast

#288a19 as textRatioAAAA largeAAAFix
Aaon white
4.43:1failpassfail
  • AA: use #278619 as the text (4.66:1)
  • AAA: use #1d6312 as the text (7.38:1)
  • AA: or shift the background to #080808 (4.52:1)
Aaon black
4.74:1passpassfail
  • AAA: use #32ac20 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288a19 as the background.

Brands using this color

mcpConnect your agent — build around #288a19
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 #288a19 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288a19-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