Color

#40c477

#40c477
hex#40c477
rgbrgb(64, 196, 119)
hslhsl(145, 53%, 51%)
oklchoklch(0.73 0.16 153.6)
Closest name: Emerald Green (#50c878)Relative luminance 0.419

Colors that go with #40c477

Charcoal, Mustard Yellow 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 →

#c4408d

#4bc440 · #40c4b9

#7740c4 · #c47740

Split-complementary

Open in tool →

#b940c4 · #c4404b

#404bc4 · #c4408d · #c4b940

Contrast

#40c477 as textRatioAAAA largeAAAFix
Aaon white
2.24:1failfailfail
  • AA: use #29854f as the text (4.6:1)
  • AAA: use #1f653c as the text (7.04:1)
  • AA: or shift the background to #404040 (4.63:1)
  • AAA: or shift the background to #212121 (7.19:1)
Aaon black
9.38:1passpasspassPasses 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 #40c477 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 #40c477
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 #40c477 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40c477-a2beb1-cc59d4-1f2d2b-eaf1e9?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