Color

#021f00

#021f00
hex#021f00
rgbrgb(2, 31, 0)
hslhsl(116, 100%, 6%)
oklchoklch(0.209 0.069 141.2)
Closest name: Nightmare (#112211)Relative luminance 0.0099

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1d001f

#111f00 · #001f0d

#00021f · #1f0002

Split-complementary

Open in tool →

#0d001f · #1f0011

#00111f · #1d001f · #1f0d00

Contrast

#021f00 as textRatioAAAA largeAAAFix
Aaon white
17.52:1passpasspassPasses AAA — no fix needed.
Aaon black
1.2:1failfailfail
  • AA: use #098a00 as the text (4.65:1)
  • AAA: use #0cb300 as the text (7.46:1)
  • AA: or shift the background to #828282 (4.56:1)
  • AAA: or shift the background to #a6a6a6 (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 #021f00 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

#021f00 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #021f00
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #021f00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/021f00-a2bea3-8f4edf-1f2d24-eef1e9?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