Color

#64dd27

#64dd27
hex#64dd27
rgbrgb(100, 221, 39)
hslhsl(100, 73%, 51%)
oklchoklch(0.796 0.233 138.1)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5457

Colors that go with #64dd27

Deep Sky Blue, 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 →

#a027dd

#bfdd27 · #27dd45

#2764dd · #dd2764

Split-complementary

Open in tool →

#4527dd · #dd27bf

#27bfdd · #a027dd · #dd4527

Contrast

#64dd27 as textRatioAAAA largeAAAFix
Aaon white
1.76:1failfailfail
  • AA: use #3a8415 as the text (4.68:1)
  • AAA: use #2c6510 as the text (7.06:1)
  • AA: or shift the background to #4f4f4f (4.65:1)
  • AAA: or shift the background to #333333 (7.17:1)
Aaon black
11.91:1passpasspassPasses 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 #64dd27 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 #64dd27
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 #64dd27 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/64dd27-a8bea2-694edf-1f2d21-f0f1e9?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