Color

#21302c

#21302c
hex#21302c
rgbrgb(33, 48, 44)
hslhsl(164, 19%, 16%)
oklchoklch(0.294 0.021 176.5)
Closest name: Marshland (#2b2e26)Relative luminance 0.0262

Colors that go with #21302c

Amber, Blue and Blue Violet 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 →

#312125

#213125 · #212d31

#2c2131 · #312c21

Split-complementary

Open in tool →

#31212d · #312521

#252131 · #312125 · #2d3121

Contrast

#21302c as textRatioAAAA largeAAAFix
Aaon white
13.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #557c72 as the text (4.51:1)
  • AAA: use #73a094 as the text (7.18:1)
  • AA: or shift the background to #949494 (4.54:1)
  • AAA: or shift the background to #bababa (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #21302c as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#21302c reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #21302c
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 #21302c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/21302c-a2beba-d459b5-1f2b2d-e9f1eb?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