Color

#288e1a

#288e1a
hex#288e1a
rgbrgb(40, 142, 26)
hslhsl(113, 69%, 33%)
oklchoklch(0.567 0.175 141.5)
Closest name: Emerald (#028f1e)Relative luminance 0.1987

Colors that go with #288e1a

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 →

#811a8e

#628e1a · #1a8e47

#1a288e · #8e1a28

Split-complementary

Open in tool →

#471a8e · #8e1a62

#1a628e · #811a8e · #8e471a

Contrast

#288e1a as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #258619 as the text (4.66:1)
  • AAA: use #1c6312 as the text (7.39:1)
  • AA: or shift the background to #0f0f0f (4.54:1)
Aaon black
4.97:1passpassfail
  • AAA: use #30ac20 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288e1a 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 #288e1a
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 #288e1a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288e1a-a2bea2-884edf-1f2d24-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