Color

#3f083a

#3f083a
hex#3f083a
rgbrgb(63, 8, 58)
hslhsl(305, 77%, 14%)
oklchoklch(0.262 0.104 332.2)
Closest name: Velvet Cosmos (#441144)Relative luminance 0.0154

Colors that go with #3f083a

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 →

#083f0d

#28083f · #3f081f

#3b3f08 · #083b3f

Split-complementary

Open in tool →

#1f3f08 · #083f28

#3f2808 · #083f0d · #081f3f

Contrast

#3f083a as textRatioAAAA largeAAAFix
Aaon white
16.07:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #d01bc1 as the text (4.61:1)
  • AAA: use #ea5dde as the text (7.12:1)
  • AA: or shift the background to #8a8a8a (4.65:1)
  • AAA: or shift the background to #adadad (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 #3f083a 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

#3f083a reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f083a
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 #3f083a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f083a-c19fba-8ccb62-2d1f26-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