Color

#12ca4f

#12ca4f
hex#12ca4f
rgbrgb(18, 202, 79)
hslhsl(140, 84%, 43%)
oklchoklch(0.732 0.212 147.3)
Closest name: Alienated (#00cc55)Relative luminance 0.4293

Colors that go with #12ca4f

Violet, Hot Pink and Charcoal 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.

Real palettes that use #12ca4f

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ca128c

#30ca12 · #12caab

#4f12ca · #ca4f12

Split-complementary

Open in tool →

#ab12ca · #ca1230

#1230ca · #ca128c · #caab12

Contrast

#12ca4f as textRatioAAAA largeAAAFix
Aaon white
2.19:1failfailfail
  • AA: use #0c8835 as the text (4.58:1)
  • AAA: use #096728 as the text (7.04:1)
  • AA: or shift the background to #424242 (4.59:1)
  • AAA: or shift the background to #242424 (7.09:1)
Aaon black
9.59:1passpasspassPasses 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 #12ca4f 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 #12ca4f
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 #12ca4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12ca4f-a2beaf-c259d4-1f2d2a-ebf1e9?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