Color

#28cc7a

#28cc7a
hex#28cc7a
rgbrgb(40, 204, 122)
hslhsl(150, 67%, 48%)
oklchoklch(0.747 0.175 155)
Closest name: Emerald Green (#50c878)Relative luminance 0.4504

Colors that go with #28cc7a

Charcoal, Blue and Mustard Yellow 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 →

#cc287a

#28cc28 · #28cccc

#7a28cc · #cc7a28

Split-complementary

Open in tool →

#cc28cc · #cc2828

#2828cc · #cc287a · #cccc28

Contrast

#28cc7a as textRatioAAAA largeAAAFix
Aaon white
2.1:1failfailfail
  • AA: use #1a844f as the text (4.71:1)
  • AAA: use #14663d as the text (7.01:1)
  • AA: or shift the background to #454545 (4.57:1)
  • AAA: or shift the background to #262626 (7.21:1)
Aaon black
10.01:1passpasspassPasses 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 #28cc7a as the background.

Brands using this color

mcpConnect your agent — build around #28cc7a
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 #28cc7a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28cc7a-a2beb3-d459d2-1f2d2c-e9f1ea?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