Color

#81fb50

#81fb50
hex#81fb50
rgbrgb(129, 251, 80)
hslhsl(103, 96%, 65%)
oklchoklch(0.884 0.233 138.2)
Closest name: Acid Green (#8ffe09)Relative luminance 0.7424

Colors that go with #81fb50

Violet, Charcoal and Deep Sky 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 →

#cb50fb

#d6fb50 · #50fb75

#5081fb · #fb5081

Split-complementary

Open in tool →

#7550fb · #fb50d6

#50d6fb · #cb50fb · #fb7550

Contrast

#81fb50 as textRatioAAAA largeAAAFix
Aaon white
1.33:1failfailfail
  • AA: use #288703 as the text (4.61:1)
  • AAA: use #1e6402 as the text (7.29:1)
  • AA: or shift the background to #636363 (4.53:1)
  • AAA: or shift the background to #474747 (7.01:1)
Aaon black
15.85:1passpasspassPasses 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 #81fb50 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 #81fb50
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 #81fb50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81fb50-a6bea2-704edf-1f2d21-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