Color

#42001e

#42001e
hex#42001e
rgbrgb(66, 0, 30)
hslhsl(333, 100%, 13%)
oklchoklch(0.245 0.099 0.6)
Closest name: Dark Sanctuary (#3f012c)Relative luminance 0.0125

Tints & shades

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

Harmonies

Complementary

Open in tool →

#004224

#42003f · #420300

#1e4200 · #001e42

Split-complementary

Open in tool →

#004203 · #003f42

#3f4200 · #004224 · #030042

Contrast

#42001e as textRatioAAAA largeAAAFix
Aaon white
16.79:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #e60067 as the text (4.56:1)
  • AAA: use #ff57a2 as the text (7.14:1)
  • AA: or shift the background to #858585 (4.55:1)
  • AAA: or shift the background to #a8a8a8 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42001e 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

#42001e reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42001e
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 #42001e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42001e-c49ca9-62cb69-2d1f20-f1e9f0?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