Color

#40f74f

#40f74f
hex#40f74f
rgbrgb(64, 247, 79)
hslhsl(125, 92%, 61%)
oklchoklch(0.855 0.253 143.9)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6818

Colors that go with #40f74f

Violet, Deep Sky Blue and Hot Pink 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 →

#f740e8

#8cf740 · #40f7ab

#4f40f7 · #f74f40

Split-complementary

Open in tool →

#ab40f7 · #f7408c

#408cf7 · #f740e8 · #f7ab40

Contrast

#40f74f as textRatioAAAA largeAAAFix
Aaon white
1.43:1failfailfail
  • AA: use #068911 as the text (4.57:1)
  • AAA: use #04670c as the text (7.12:1)
  • AA: or shift the background to #5e5e5e (4.52:1)
  • AAA: or shift the background to #424242 (7:1)
Aaon black
14.64:1passpasspassPasses 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 #40f74f 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 #40f74f
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 #40f74f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40f74f-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