Color

#12911a

#12911a
hex#12911a
rgbrgb(18, 145, 26)
hslhsl(124, 78%, 32%)
oklchoklch(0.572 0.183 143.2)
Closest name: Emerald (#028f1e)Relative luminance 0.2045

Colors that go with #12911a

Crimson, Royal Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#911289

#499112 · #12915a

#1a1291 · #911a12

Split-complementary

Open in tool →

#5a1291 · #911249

#124991 · #911289 · #915a12

Contrast

#12911a as textRatioAAAA largeAAAFix
Aaon white
4.13:1failpassfail
  • AA: use #118819 as the text (4.61:1)
  • AAA: use #0c6412 as the text (7.38:1)
  • AA: or shift the background to #121212 (4.54:1)
Aaon black
5.09:1passpassfail
  • AAA: use #16b120 as the text (7.34:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12911a 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 #12911a
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 #12911a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12911a-a2bea7-a24edf-1f2d26-edf1e9?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