Color

#40ce4c

#40ce4c
hex#40ce4c
rgbrgb(64, 206, 76)
hslhsl(125, 59%, 53%)
oklchoklch(0.75 0.209 144.3)
Closest name: Battletoad (#11cc55)Relative luminance 0.4575

Colors that go with #40ce4c

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 →

#ce40c2

#7bce40 · #40ce93

#4c40ce · #ce4c40

Split-complementary

Open in tool →

#9340ce · #ce407b

#407bce · #ce40c2 · #ce9340

Contrast

#40ce4c as textRatioAAAA largeAAAFix
Aaon white
2.07:1failfailfail
  • AA: use #23862b as the text (4.65:1)
  • AAA: use #1a6520 as the text (7.18:1)
  • AA: or shift the background to #454545 (4.63:1)
  • AAA: or shift the background to #292929 (7.03:1)
Aaon black
10.15:1passpasspassPasses 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 #40ce4c as the background.

Brands using this color

mcpConnect your agent — build around #40ce4c
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 #40ce4c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40ce4c-a2bea7-a54edf-1f2d26-ecf1e9?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