Color

#12a141

#12a141
hex#12a141
rgbrgb(18, 161, 65)
hslhsl(140, 80%, 35%)
oklchoklch(0.62 0.176 147.7)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.26

Colors that go with #12a141

Charcoal, Blue and Crimson 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 →

#a11271

#2aa112 · #12a189

#4112a1 · #a14112

Split-complementary

Open in tool →

#8912a1 · #a1122a

#122aa1 · #a11271 · #a18912

Contrast

#12a141 as textRatioAAAA largeAAAFix
Aaon white
3.39:1failpassfail
  • AA: use #0f8536 as the text (4.74:1)
  • AAA: use #0b6529 as the text (7.22:1)
  • AA: or shift the background to #242424 (4.58:1)
Aaon black
6.2:1passpassfail
  • AAA: use #13ae47 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12a141 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #12a141
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 #12a141 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12a141-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