Color

#18911a

#18911a
hex#18911a
rgbrgb(24, 145, 26)
hslhsl(121, 72%, 33%)
oklchoklch(0.572 0.182 142.9)
Closest name: Emerald (#028f1e)Relative luminance 0.2052

Colors that go with #18911a

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 →

#91188f

#529118 · #189156

#1a1891 · #911a18

Split-complementary

Open in tool →

#561891 · #911852

#185291 · #91188f · #915618

Contrast

#18911a as textRatioAAAA largeAAAFix
Aaon white
4.11:1failpassfail
  • AA: use #168818 as the text (4.6:1)
  • AAA: use #106512 as the text (7.26:1)
  • AA: or shift the background to #121212 (4.55:1)
Aaon black
5.1:1passpassfail
  • AAA: use #1daf1f as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18911a 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 #18911a
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 #18911a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18911a-a2bea6-9b4edf-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