Color

#211b03

#211b03
hex#211b03
rgbrgb(33, 27, 3)
hslhsl(48, 83%, 7%)
oklchoklch(0.223 0.041 95.8)
Closest name: Noir Mystique (#1f180a)Relative luminance 0.0111

Colors that go with #211b03

Blue Violet, Charcoal and Royal Blue 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.

Real palettes that use #211b03

Tints & shades

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

Harmonies

Complementary

Open in tool →

#030921

#210c03 · #182103

#03211b · #1b0321

Split-complementary

Open in tool →

#031821 · #0c0321

#03210c · #030921 · #210318

Contrast

#211b03 as textRatioAAAA largeAAAFix
Aaon white
17.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.22:1failfailfail
  • AA: use #8c730d as the text (4.57:1)
  • AAA: use #b69511 as the text (7.3:1)
  • AA: or shift the background to #858585 (4.65:1)
  • AAA: or shift the background to #a6a6a6 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #211b03 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

#211b03 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #211b03
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 #211b03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/211b03-c4c09c-62aacb-2a2d1f-f1ece9?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