Color

#42e411

#42e411
hex#42e411
rgbrgb(66, 228, 17)
hslhsl(106, 86%, 48%)
oklchoklch(0.804 0.259 140.7)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5669

Colors that go with #42e411

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 →

#b311e4

#ace411 · #11e449

#1142e4 · #e41142

Split-complementary

Open in tool →

#4911e4 · #e411ac

#11ace4 · #b311e4 · #e44911

Contrast

#42e411 as textRatioAAAA largeAAAFix
Aaon white
1.7:1failfailfail
  • AA: use #27850a as the text (4.72:1)
  • AAA: use #1d6407 as the text (7.3:1)
  • AA: or shift the background to #525252 (4.59:1)
  • AAA: or shift the background to #363636 (7.1:1)
Aaon black
12.34:1passpasspassPasses 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 #42e411 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 #42e411
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 #42e411 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42e411-a5bea2-774edf-1f2d22-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