Color

#81e490

#81e490
hex#81e490
rgbrgb(129, 228, 144)
hslhsl(129, 65%, 70%)
oklchoklch(0.837 0.15 147.6)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6217

Colors that go with #81e490

Charcoal, Taupe and Violet 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 →

#e481d5

#a4e481 · #81e4c1

#9081e4 · #e49081

Split-complementary

Open in tool →

#c181e4 · #e481a4

#81a4e4 · #e481d5 · #e4c181

Contrast

#81e490 as textRatioAAAA largeAAAFix
Aaon white
1.56:1failfailfail
  • AA: use #1d872c as the text (4.61:1)
  • AAA: use #156521 as the text (7.2:1)
  • AA: or shift the background to #575757 (4.62:1)
  • AAA: or shift the background to #3b3b3b (7.17:1)
Aaon black
13.43:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #81e490 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#81e490 reads as vivid, light, clean. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #81e490
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 #81e490 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81e490-a2bea9-ae4edf-1f2d27-ecf1e9?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