Color

#25211d

#25211d
hex#25211d
rgbrgb(37, 33, 29)
hslhsl(30, 12%, 13%)
oklchoklch(0.251 0.01 67.4)
Closest name: Underworld (#1e231c)Relative luminance 0.0157

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1d2125

#251d1d · #25251d

#1d2521 · #211d25

Split-complementary

Open in tool →

#1d2525 · #1d1d25

#1d251d · #1d2125 · #251d25

Contrast

#25211d as textRatioAAAA largeAAAFix
Aaon white
15.98:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #817365 as the text (4.57:1)
  • AAA: use #a19487 as the text (7.1:1)
  • AA: or shift the background to #8a8a8a (4.63:1)
  • AAA: or shift the background to #adadad (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #25211d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#25211d reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #25211d
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 #25211d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/25211d-c4b59c-62c9cb-2d2c1f-f1eae9?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