Color

#81ba45

#81ba45
hex#81ba45
rgbrgb(129, 186, 69)
hslhsl(89, 46%, 50%)
oklchoklch(0.725 0.16 131.4)
Closest name: Citrus (#9fb70a)Relative luminance 0.4021

Colors that go with #81ba45

Charcoal, Royal Blue and Slate Gray 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.

Real palettes that use #81ba45

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7e45ba

#bab845 · #47ba45

#4581ba · #ba4581

Split-complementary

Open in tool →

#4547ba · #b845ba

#45bab8 · #7e45ba · #ba4547

Contrast

#81ba45 as textRatioAAAA largeAAAFix
Aaon white
2.32:1failfailfail
  • AA: use #587f2f as the text (4.68:1)
  • AAA: use #436124 as the text (7.06:1)
  • AA: or shift the background to #3d3d3d (4.68:1)
  • AAA: or shift the background to #1f1f1f (7.1:1)
Aaon black
9.04:1passpasspassPasses 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 #81ba45 as the background.

Brands using this color

mcpConnect your agent — build around #81ba45
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 #81ba45 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81ba45-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