Color

#288a47

#288a47
hex#288a47
rgbrgb(40, 138, 71)
hslhsl(139, 55%, 35%)
oklchoklch(0.561 0.135 149.8)
Closest name: Center Field (#008b56)Relative luminance 0.1908

Colors that go with #288a47

Charcoal, Crimson and Royal Blue 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 →

#8a286b

#3a8a28 · #288a78

#47288a · #8a4728

Split-complementary

Open in tool →

#78288a · #8a283a

#283a8a · #8a286b · #8a7828

Contrast

#288a47 as textRatioAAAA largeAAAFix
Aaon white
4.36:1failpassfail
  • AA: use #278645 as the text (4.58:1)
  • AAA: use #1d6333 as the text (7.28:1)
  • AA: or shift the background to #0a0a0a (4.54:1)
Aaon black
4.82:1passpassfail
  • AAA: use #31aa58 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288a47 as the background.

Brands using this color

mcpConnect your agent — build around #288a47
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 #288a47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288a47-a2beae-c059d4-1f2d2a-ebf1e9?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