Color

#031b04

#031b04
hex#031b04
rgbrgb(3, 27, 4)
hslhsl(122, 80%, 6%)
oklchoklch(0.196 0.055 144.1)
Closest name: Nightmare (#112211)Relative luminance 0.0081

Colors that go with #031b04

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 →

#1c031b

#0e1c03 · #031c10

#04031c · #1c0403

Split-complementary

Open in tool →

#10031c · #1c030e

#030e1c · #1c031b · #1c1003

Contrast

#031b04 as textRatioAAAA largeAAAFix
Aaon white
18.07:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #0f8a13 as the text (4.67:1)
  • AAA: use #13ae19 as the text (7.1:1)
  • AA: or shift the background to #808080 (4.57:1)
  • AAA: or shift the background to #a3a3a3 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #031b04 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

#031b04 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031b04
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 #031b04 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031b04-a2bea6-9e4edf-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