Color

#42db00

#42db00
hex#42db00
rgbrgb(66, 219, 0)
hslhsl(102, 100%, 43%)
oklchoklch(0.78 0.252 140.2)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5182

Colors that go with #42db00

Taupe, Violet and Hot Pink 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 →

#9a00db

#afdb00 · #00db2c

#0042db · #db0042

Split-complementary

Open in tool →

#2c00db · #db00af

#00afdb · #9a00db · #db2c00

Contrast

#42db00 as textRatioAAAA largeAAAFix
Aaon white
1.85:1failfailfail
  • AA: use #288500 as the text (4.72:1)
  • AAA: use #1f6600 as the text (7.1:1)
  • AA: or shift the background to #4d4d4d (4.57:1)
  • AAA: or shift the background to #303030 (7.14:1)
Aaon black
11.36:1passpasspassPasses 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 #42db00 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 #42db00
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 #42db00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42db00-a7bea2-6e4edf-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