Color

#421a25

#421a25
hex#421a25
rgbrgb(66, 26, 37)
hslhsl(344, 43%, 18%)
oklchoklch(0.281 0.063 4.7)
Closest name: Black-Hearted (#3e1825)Relative luminance 0.0203

Colors that go with #421a25

Charcoal, Dark Olive Green and Sea Green 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 →

#1a4237

#421a38 · #42231a

#25421a · #1a2542

Split-complementary

Open in tool →

#1a4223 · #1a3842

#38421a · #1a4237 · #231a42

Contrast

#421a25 as textRatioAAAA largeAAAFix
Aaon white
14.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #bb546f as the text (4.61:1)
  • AAA: use #cc7f94 as the text (7.03:1)
  • AA: or shift the background to #8f8f8f (4.62:1)
  • AAA: or shift the background to #b3b3b3 (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 #421a25 as the background.

Brands using this color

Fonts for this mood

#421a25 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #421a25
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 #421a25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/421a25-c49ca2-62cb7c-2d221f-f1e9ef?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