Color

#01cb81

#01cb81
hex#01cb81
rgbrgb(1, 203, 129)
hslhsl(158, 99%, 40%)
oklchoklch(0.742 0.172 158.4)
Closest name: Emerald Green (#50c878)Relative luminance 0.443

Colors that go with #01cb81

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 →

#cb014b

#01cb1c · #01b0cb

#8101cb · #cb8101

Split-complementary

Open in tool →

#cb01b0 · #cb1c01

#1c01cb · #cb014b · #b0cb01

Contrast

#01cb81 as textRatioAAAA largeAAAFix
Aaon white
2.13:1failfailfail
  • AA: use #018454 as the text (4.74:1)
  • AAA: use #016540 as the text (7.15:1)
  • AA: or shift the background to #454545 (4.5:1)
  • AAA: or shift the background to #262626 (7.11:1)
Aaon black
9.86:1passpasspassPasses 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 #01cb81 as the background.

Brands using this color

mcpConnect your agent — build around #01cb81
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 #01cb81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/01cb81-a2beb7-d459c2-1f2c2d-e9f1eb?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