Color

#281b21

#281b21
hex#281b21
rgbrgb(40, 27, 33)
hslhsl(332, 19%, 13%)
oklchoklch(0.241 0.023 349.6)
Closest name: Night Demons (#201b20)Relative luminance 0.0134

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1b2722

#271b27 · #271b1b

#21271b · #1b2127

Split-complementary

Open in tool →

#1b271b · #1b2727

#27271b · #1b2722 · #1b1b27

Contrast

#281b21 as textRatioAAAA largeAAAFix
Aaon white
16.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.27:1failfailfail
  • AA: use #98677e as the text (4.58:1)
  • AAA: use #b18c9d as the text (7.11:1)
  • AA: or shift the background to #878787 (4.61:1)
  • AAA: or shift the background to #ababab (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281b21 as the background.

Brands using this color

Fonts for this mood

#281b21 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281b21
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 #281b21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281b21-c49caa-62cb67-2d1f20-f1e9f1?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