Color

#42eb45

#42eb45
hex#42eb45
rgbrgb(66, 235, 69)
hslhsl(121, 81%, 59%)
oklchoklch(0.824 0.246 143.1)
Closest name: Becquerel (#4bec13)Relative luminance 0.61

Colors that go with #42eb45

Taupe, Violet and Dark Orange 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 →

#eb42e8

#94eb42 · #42eb99

#4542eb · #eb4542

Split-complementary

Open in tool →

#9942eb · #eb4294

#4294eb · #eb42e8 · #eb9942

Contrast

#42eb45 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #0f8a11 as the text (4.5:1)
  • AAA: use #0b660c as the text (7.19:1)
  • AA: or shift the background to #575757 (4.54:1)
  • AAA: or shift the background to #3b3b3b (7.04:1)
Aaon black
13.2:1passpasspassPasses 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 #42eb45 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 #42eb45
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 #42eb45 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42eb45-a2bea6-9b4edf-1f2d26-edf1e9?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