Color

#4fb57b

#4fb57b
hex#4fb57b
rgbrgb(79, 181, 123)
hslhsl(146, 41%, 51%)
oklchoklch(0.697 0.129 155.8)
Closest name: mediumseagreen (#3cb371)Relative luminance 0.3614

Colors that go with #4fb57b

Charcoal, Blue and Cornflower 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 →

#b54f89

#56b54f · #4fb5ae

#7b4fb5 · #b57b4f

Split-complementary

Open in tool →

#ae4fb5 · #b54f56

#4f56b5 · #b54f89 · #b5ae4f

Contrast

#4fb57b as textRatioAAAA largeAAAFix
Aaon white
2.55:1failfailfail
  • AA: use #368157 as the text (4.74:1)
  • AAA: use #296141 as the text (7.29:1)
  • AA: or shift the background to #383838 (4.59:1)
  • AAA: or shift the background to #171717 (7.02:1)
Aaon black
8.23:1passpasspassPasses 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 #4fb57b as the background.

Brands using this color

mcpConnect your agent — build around #4fb57b
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 #4fb57b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4fb57b-a2beb1-ce59d4-1f2d2b-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