Color

#42a239

#42a239
hex#42a239
rgbrgb(66, 162, 57)
hslhsl(115, 48%, 43%)
oklchoklch(0.632 0.169 141.9)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2729

Colors that go with #42a239

Charcoal, Blue and Crimson 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 →

#9a39a2

#76a239 · #39a265

#3942a2 · #a23942

Split-complementary

Open in tool →

#6539a2 · #a23976

#3976a2 · #9a39a2 · #a26539

Contrast

#42a239 as textRatioAAAA largeAAAFix
Aaon white
3.25:1failpassfail
  • AA: use #36842e as the text (4.67:1)
  • AAA: use #286222 as the text (7.34:1)
  • AA: or shift the background to #262626 (4.65:1)
Aaon black
6.46:1passpassfail
  • AAA: use #45aa3c as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42a239 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 #42a239
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 #42a239 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42a239-a2bea3-8d4edf-1f2d24-eef1e9?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