Color

#3f0336

#3f0336
hex#3f0336
rgbrgb(63, 3, 54)
hslhsl(309, 91%, 13%)
oklchoklch(0.255 0.107 335.6)
Closest name: Dark Sanctuary (#3f012c)Relative luminance 0.0139

Tints & shades

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

Harmonies

Complementary

Open in tool →

#033f0c

#2a033f · #3f0318

#363f03 · #03363f

Split-complementary

Open in tool →

#183f03 · #033f2a

#3f2a03 · #033f0c · #03183f

Contrast

#3f0336 as textRatioAAAA largeAAAFix
Aaon white
16.44:1passpasspassPasses AAA — no fix needed.
Aaon black
1.28:1failfailfail
  • AA: use #d60ab8 as the text (4.59:1)
  • AAA: use #f74bdd as the text (7.01:1)
  • AA: or shift the background to #878787 (4.58:1)
  • AAA: or shift the background to #ababab (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f0336 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

#3f0336 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f0336
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 #3f0336 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f0336-c19fb8-85cb62-2d1f25-eee9f1?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