Color

#331e48

#331e48
hex#331e48
rgbrgb(51, 30, 72)
hslhsl(270, 41%, 20%)
oklchoklch(0.284 0.077 305.1)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.021

Colors that go with #331e48

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 →

#33481e

#1e1e48 · #481e48

#48331e · #1e4833

Split-complementary

Open in tool →

#48481e · #1e481e

#481e1e · #33481e · #1e4848

Contrast

#331e48 as textRatioAAAA largeAAAFix
Aaon white
14.79:1passpasspassPasses AAA — no fix needed.
Aaon black
1.42:1failfailfail
  • AA: use #8f61bd as the text (4.61:1)
  • AAA: use #ab88cd as the text (7.13:1)
  • AA: or shift the background to #8f8f8f (4.57:1)
  • AAA: or shift the background to #b3b3b3 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331e48 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#331e48 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331e48
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 #331e48 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331e48-b59cc4-c9cb62-2c1f2d-eae9f1?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