Color

#131d01

#131d01
hex#131d01
rgbrgb(19, 29, 1)
hslhsl(81, 93%, 6%)
oklchoklch(0.213 0.052 126.1)
Closest name: Nightmare (#112211)Relative luminance 0.0102

Colors that go with #131d01

Blue Violet, Charcoal 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 →

#0b011e

#1e1901 · #051e01

#01141e · #1e0114

Split-complementary

Open in tool →

#01051e · #19011e

#011e19 · #0b011e · #1e0105

Contrast

#131d01 as textRatioAAAA largeAAAFix
Aaon white
17.44:1passpasspassPasses AAA — no fix needed.
Aaon black
1.2:1failfailfail
  • AA: use #588505 as the text (4.77:1)
  • AAA: use #6fa706 as the text (7.21:1)
  • AA: or shift the background to #828282 (4.54:1)
  • AAA: or shift the background to #a6a6a6 (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 #131d01 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#131d01 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #131d01
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 #131d01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131d01-b1bea2-4e62df-222d1f-f1f0e9?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