Color

#420b15

#420b15
hex#420b15
rgbrgb(66, 11, 21)
hslhsl(349, 71%, 15%)
oklchoklch(0.254 0.083 15.3)
Closest name: English Breakfast (#441111)Relative luminance 0.0145

Colors that go with #420b15

Charcoal, Denim 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 →

#0b4137

#410b30 · #411c0b

#15410b · #0b1541

Split-complementary

Open in tool →

#0b411c · #0b3041

#30410b · #0b4137 · #1c0b41

Contrast

#420b15 as textRatioAAAA largeAAAFix
Aaon white
16.27:1passpasspassPasses AAA — no fix needed.
Aaon black
1.29:1failfailfail
  • AA: use #dc2e4e as the text (4.54:1)
  • AAA: use #e76f85 as the text (7.01:1)
  • AA: or shift the background to #878787 (4.53:1)
  • AAA: or shift the background to #ababab (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #420b15 as the background.

Brands using this color

Fonts for this mood

#420b15 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #420b15
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 #420b15 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/420b15-c49c9f-62cb85-2d231f-f1e9ee?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