Color

#12ca4c

#12ca4c
hex#12ca4c
rgbrgb(18, 202, 76)
hslhsl(139, 84%, 43%)
oklchoklch(0.732 0.215 146.9)
Closest name: Alienated (#00cc55)Relative luminance 0.4289

Colors that go with #12ca4c

Blue, Charcoal 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 →

#ca128f

#33ca12 · #12caa8

#4c12ca · #ca4c12

Split-complementary

Open in tool →

#a812ca · #ca1233

#1233ca · #ca128f · #caa812

Contrast

#12ca4c as textRatioAAAA largeAAAFix
Aaon white
2.19:1failfailfail
  • AA: use #0c8833 as the text (4.58:1)
  • AAA: use #096727 as the text (7.04:1)
  • AA: or shift the background to #424242 (4.58:1)
  • AAA: or shift the background to #242424 (7.08:1)
Aaon black
9.58:1passpasspassPasses 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 #12ca4c as the background.

Brands using this color

mcpConnect your agent — build around #12ca4c
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 #12ca4c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12ca4c-a2beae-c059d4-1f2d2a-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