Color

#42c412

#42c412
hex#42c412
rgbrgb(66, 196, 18)
hslhsl(104, 83%, 42%)
oklchoklch(0.72 0.226 139.9)
Closest name: Crude Banana (#21c40e)Relative luminance 0.4068

Colors that go with #42c412

Blue, Charcoal and Royal Blue 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 →

#9512c4

#9bc412 · #12c43c

#1242c4 · #c41242

Split-complementary

Open in tool →

#3c12c4 · #c4129b

#129bc4 · #9512c4 · #c43c12

Contrast

#42c412 as textRatioAAAA largeAAAFix
Aaon white
2.3:1failfailfail
  • AA: use #2d870d as the text (4.58:1)
  • AAA: use #216209 as the text (7.46:1)
  • AA: or shift the background to #404040 (4.51:1)
  • AAA: or shift the background to #212121 (7.01:1)
Aaon black
9.14:1passpasspassPasses 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 #42c412 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 #42c412
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 #42c412 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42c412-a6bea2-724edf-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