Color

#3f1338

#3f1338
hex#3f1338
rgbrgb(63, 19, 56)
hslhsl(310, 54%, 16%)
oklchoklch(0.274 0.086 334.4)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0181

Colors that go with #3f1338

Charcoal, Sea Green and Teal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#133f1a

#30133f · #3f1321

#373f13 · #13373f

Split-complementary

Open in tool →

#213f13 · #133f30

#3f3013 · #133f1a · #13213f

Contrast

#3f1338 as textRatioAAAA largeAAAFix
Aaon white
15.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #c43bad as the text (4.58:1)
  • AAA: use #d572c4 as the text (7.03:1)
  • AA: or shift the background to #8c8c8c (4.59:1)
  • AAA: or shift the background to #b0b0b0 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f1338 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

#3f1338 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f1338
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3f1338 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f1338-c19fb7-83cb62-2d1f25-efe9f1?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