Color

#12ca77

#12ca77
hex#12ca77
rgbrgb(18, 202, 119)
hslhsl(153, 84%, 43%)
oklchoklch(0.738 0.179 155.3)
Closest name: Emerald Green (#50c878)Relative luminance 0.437

Colors that go with #12ca77

Charcoal, Mustard Yellow and Taupe 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 →

#ca1264

#12ca1b · #12c1ca

#7712ca · #ca7712

Split-complementary

Open in tool →

#ca12c1 · #ca1b12

#1b12ca · #ca1264 · #c1ca12

Contrast

#12ca77 as textRatioAAAA largeAAAFix
Aaon white
2.16:1failfailfail
  • AA: use #0c8850 as the text (4.51:1)
  • AAA: use #09633a as the text (7.35:1)
  • AA: or shift the background to #424242 (4.66:1)
  • AAA: or shift the background to #262626 (7.02:1)
Aaon black
9.74:1passpasspassPasses 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 #12ca77 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #12ca77
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 #12ca77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12ca77-a2beb5-d459cc-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