Color

#81ea10

#81ea10
hex#81ea10
rgbrgb(129, 234, 16)
hslhsl(89, 87%, 49%)
oklchoklch(0.84 0.24 134.5)
Closest name: Becquerel (#4bec13)Relative luminance 0.6355

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#7910ea

#eae610 · #14ea10

#1081ea · #ea1081

Split-complementary

Open in tool →

#1014ea · #e610ea

#10eae6 · #7910ea · #ea1014

Contrast

#81ea10 as textRatioAAAA largeAAAFix
Aaon white
1.53:1failfailfail
  • AA: use #478109 as the text (4.76:1)
  • AAA: use #376407 as the text (7.03:1)
  • AA: or shift the background to #595959 (4.57:1)
  • AAA: or shift the background to #3d3d3d (7.09:1)
Aaon black
13.71:1passpasspassPasses 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 #81ea10 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 #81ea10
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #81ea10 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81ea10-adbea2-4e4edf-212d1f-f1f1e9?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