Color

#1b2221

#1b2221
hex#1b2221
rgbrgb(27, 34, 33)
hslhsl(171, 11%, 12%)
oklchoklch(0.245 0.01 186)
Closest name: Underworld (#1e231c)Relative luminance 0.0149

Tints & shades

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

Harmonies

Complementary

Open in tool →

#221b1c

#1b221e · #1b2022

#211b22 · #22211b

Split-complementary

Open in tool →

#221b20 · #221e1b

#1e1b22 · #221b1c · #20221b

Contrast

#1b2221 as textRatioAAAA largeAAAFix
Aaon white
16.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.3:1failfailfail
  • AA: use #627a76 as the text (4.56:1)
  • AAA: use #829b97 as the text (7.08:1)
  • AA: or shift the background to #878787 (4.51:1)
  • AAA: or shift the background to #ababab (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 #1b2221 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1b2221 reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b2221
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 #1b2221 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b2221-a2bebd-d459a7-1f292d-e9f1ec?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