Color

#1f040b

#1f040b
hex#1f040b
rgbrgb(31, 4, 11)
hslhsl(344, 77%, 7%)
oklchoklch(0.166 0.05 6.2)
Closest name: Belladonna (#220011)Relative luminance 0.004

Tints & shades

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

Harmonies

Complementary

Open in tool →

#042018

#200419 · #200b04

#0b2004 · #040b20

Split-complementary

Open in tool →

#04200b · #041920

#192004 · #042018 · #0b0420

Contrast

#1f040b as textRatioAAAA largeAAAFix
Aaon white
19.44:1passpasspassPasses AAA — no fix needed.
Aaon black
1.08:1failfailfail
  • AA: use #e21d52 as the text (4.53:1)
  • AAA: use #ec6a8d as the text (7.01:1)
  • AA: or shift the background to #7a7a7a (4.53:1)
  • AAA: or shift the background to #9c9c9c (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 #1f040b 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

#1f040b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f040b
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 #1f040b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f040b-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