Color

#15cb73

#15cb73
hex#15cb73
rgbrgb(21, 203, 115)
hslhsl(151, 81%, 44%)
oklchoklch(0.74 0.183 154)
Closest name: Emerald Green (#50c878)Relative luminance 0.4411

Colors that go with #15cb73

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 →

#cb156d

#15cb18 · #15c8cb

#7315cb · #cb7315

Split-complementary

Open in tool →

#cb15c8 · #cb1815

#1815cb · #cb156d · #c8cb15

Contrast

#15cb73 as textRatioAAAA largeAAAFix
Aaon white
2.14:1failfailfail
  • AA: use #0e864c as the text (4.63:1)
  • AAA: use #0b663a as the text (7.06:1)
  • AA: or shift the background to #424242 (4.7:1)
  • AAA: or shift the background to #262626 (7.08:1)
Aaon black
9.82:1passpasspassPasses 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 #15cb73 as the background.

Brands using this color

mcpConnect your agent — build around #15cb73
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 #15cb73 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15cb73-a2beb4-d459d0-1f2d2c-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