Color

#3f1503

#3f1503
hex#3f1503
rgbrgb(63, 21, 3)
hslhsl(18, 91%, 13%)
oklchoklch(0.259 0.072 42.5)
Closest name: Black Chocolate (#441100)Relative luminance 0.016

Tints & shades

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

Harmonies

Complementary

Open in tool →

#032d3f

#3f030f · #3f3303

#033f15 · #15033f

Split-complementary

Open in tool →

#033f33 · #030f3f

#0f3f03 · #032d3f · #33033f

Contrast

#3f1503 as textRatioAAAA largeAAAFix
Aaon white
15.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #d1460a as the text (4.59:1)
  • AAA: use #f56d32 as the text (7.12:1)
  • AA: or shift the background to #8a8a8a (4.61:1)
  • AAA: or shift the background to #adadad (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 #3f1503 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

#3f1503 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f1503
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 #3f1503 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f1503-c4ad9c-62cbb8-2d291f-f1e9eb?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