Color

#40c442

#40c442
hex#40c442
rgbrgb(64, 196, 66)
hslhsl(121, 53%, 51%)
oklchoklch(0.723 0.205 143.3)
Closest name: Battletoad (#11cc55)Relative luminance 0.4096

Colors that go with #40c442

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 →

#c440c2

#80c440 · #40c484

#4240c4 · #c44240

Split-complementary

Open in tool →

#8440c4 · #c44080

#4080c4 · #c440c2 · #c48440

Contrast

#40c442 as textRatioAAAA largeAAAFix
Aaon white
2.28:1failfailfail
  • AA: use #29852a as the text (4.68:1)
  • AAA: use #1f6520 as the text (7.14:1)
  • AA: or shift the background to #404040 (4.54:1)
  • AAA: or shift the background to #212121 (7.05:1)
Aaon black
9.19:1passpasspassPasses 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 #40c442 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 #40c442
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 #40c442 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40c442-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