Color

#42101b

#42101b
hex#42101b
rgbrgb(66, 16, 27)
hslhsl(347, 61%, 16%)
oklchoklch(0.262 0.077 11.1)
Closest name: What We Do in the Shadows (#441122)Relative luminance 0.0161

Tints & shades

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

Harmonies

Complementary

Open in tool →

#104237

#421034 · #421e10

#1b4210 · #101b42

Split-complementary

Open in tool →

#10421e · #103442

#344210 · #104237 · #1e1042

Contrast

#42101b as textRatioAAAA largeAAAFix
Aaon white
15.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #d03e5e as the text (4.53:1)
  • AAA: use #de788e as the text (7.18:1)
  • AA: or shift the background to #8a8a8a (4.6:1)
  • AAA: or shift the background to #adadad (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42101b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#42101b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42101b
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 #42101b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42101b-c49ca0-62cb82-2d221f-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