Color

#42eb00

#42eb00
hex#42eb00
rgbrgb(66, 235, 0)
hslhsl(103, 100%, 46%)
oklchoklch(0.822 0.268 140.5)
Closest name: Becquerel (#4bec13)Relative luminance 0.6057

Colors that go with #42eb00

Deep Sky Blue, 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 →

#a800eb

#b8eb00 · #00eb33

#0042eb · #eb0042

Split-complementary

Open in tool →

#3300eb · #eb00b8

#00b8eb · #a800eb · #eb3300

Contrast

#42eb00 as textRatioAAAA largeAAAFix
Aaon white
1.6:1failfailfail
  • AA: use #268500 as the text (4.73:1)
  • AAA: use #1d6600 as the text (7.11:1)
  • AA: or shift the background to #575757 (4.51:1)
  • AAA: or shift the background to #383838 (7.32:1)
Aaon black
13.11:1passpasspassPasses 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 #42eb00 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 #42eb00
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 #42eb00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42eb00-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