Color

#28900e

#28900e
hex#28900e
rgbrgb(40, 144, 14)
hslhsl(108, 82%, 31%)
oklchoklch(0.572 0.181 140.8)
Closest name: Emerald (#028f1e)Relative luminance 0.2043

Colors that go with #28900e

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 →

#760e90

#69900e · #0e9035

#0e2890 · #900e28

Split-complementary

Open in tool →

#350e90 · #900e69

#0e6990 · #760e90 · #90350e

Contrast

#28900e as textRatioAAAA largeAAAFix
Aaon white
4.13:1failpassfail
  • AA: use #26870d as the text (4.61:1)
  • AAA: use #1c660a as the text (7.11:1)
  • AA: or shift the background to #121212 (4.54:1)
Aaon black
5.09:1passpassfail
  • AAA: use #30ac11 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28900e 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 #28900e
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 #28900e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28900e-a4bea2-7c4edf-1f2d23-eff1e9?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