Color

#431f4d

#431f4d
hex#431f4d
rgbrgb(67, 31, 77)
hslhsl(287, 43%, 21%)
oklchoklch(0.311 0.089 318.5)
Closest name: Velvet Cosmos (#441144)Relative luminance 0.0271

Colors that go with #431f4d

Charcoal, Dark Olive Green and Sea Green 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 →

#294d1f

#2c1f4d · #4d1f40

#4d431f · #1f4d43

Split-complementary

Open in tool →

#404d1f · #1f4d2c

#4d2c1f · #294d1f · #1f404d

Contrast

#431f4d as textRatioAAAA largeAAAFix
Aaon white
13.62:1passpasspassPasses AAA — no fix needed.
Aaon black
1.54:1failfailfail
  • AA: use #a454bb as the text (4.56:1)
  • AAA: use #bb7fcc as the text (7.02:1)
  • AA: or shift the background to #969696 (4.6:1)
  • AAA: or shift the background to #bababa (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #431f4d 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

#431f4d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #431f4d
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 #431f4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/431f4d-bd9fc1-abcb62-2d1f2a-ece9f1?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