Color

#03ce79

#03ce79
hex#03ce79
rgbrgb(3, 206, 121)
hslhsl(155, 97%, 41%)
oklchoklch(0.748 0.183 155.5)
Closest name: Emerald Green (#50c878)Relative luminance 0.4554

Colors that go with #03ce79

Blue, Charcoal 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 →

#ce0358

#03ce14 · #03bdce

#7903ce · #ce7903

Split-complementary

Open in tool →

#ce03bd · #ce1403

#1403ce · #ce0358 · #bdce03

Contrast

#03ce79 as textRatioAAAA largeAAAFix
Aaon white
2.08:1failfailfail
  • AA: use #028850 as the text (4.53:1)
  • AAA: use #02643b as the text (7.27:1)
  • AA: or shift the background to #454545 (4.62:1)
  • AAA: or shift the background to #292929 (7:1)
Aaon black
10.11:1passpasspassPasses 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 #03ce79 as the background.

Brands using this color

mcpConnect your agent — build around #03ce79
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 #03ce79 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03ce79-a2beb6-d459c8-1f2d2d-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