Color

#42e619

#42e619
hex#42e619
rgbrgb(66, 230, 25)
hslhsl(108, 80%, 50%)
oklchoklch(0.809 0.259 140.9)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5782

Colors that go with #42e619

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 →

#bd19e6

#a8e619 · #19e657

#1942e6 · #e61942

Split-complementary

Open in tool →

#5719e6 · #e619a8

#19a8e6 · #bd19e6 · #e65719

Contrast

#42e619 as textRatioAAAA largeAAAFix
Aaon white
1.67:1failfailfail
  • AA: use #26850f as the text (4.73:1)
  • AAA: use #1d650b as the text (7.2:1)
  • AA: or shift the background to #545454 (4.53:1)
  • AAA: or shift the background to #383838 (7.02:1)
Aaon black
12.56:1passpasspassPasses 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 #42e619 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 #42e619
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 #42e619 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42e619-a4bea2-7c4edf-1f2d23-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