Color

#40dc28

#40dc28
hex#40dc28
rgbrgb(64, 220, 40)
hslhsl(112, 72%, 51%)
oklchoklch(0.783 0.245 141.4)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5243

Colors that go with #40dc28

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 →

#c428dc

#9adc28 · #28dc6a

#2840dc · #dc2840

Split-complementary

Open in tool →

#6a28dc · #dc289a

#289adc · #c428dc · #dc6a28

Contrast

#40dc28 as textRatioAAAA largeAAAFix
Aaon white
1.83:1failfailfail
  • AA: use #258816 as the text (4.55:1)
  • AAA: use #1c6510 as the text (7.2:1)
  • AA: or shift the background to #4d4d4d (4.62:1)
  • AAA: or shift the background to #303030 (7.22:1)
Aaon black
11.49:1passpasspassPasses 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 #40dc28 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 #40dc28
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 #40dc28 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40dc28-a2bea2-864edf-1f2d23-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