Color

#331d44

#331d44
hex#331d44
rgbrgb(51, 29, 68)
hslhsl(274, 40%, 19%)
oklchoklch(0.28 0.073 308.4)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.02

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2e441d

#201d44 · #441d41

#44331d · #1d4433

Split-complementary

Open in tool →

#41441d · #1d4420

#44201d · #2e441d · #1d4144

Contrast

#331d44 as textRatioAAAA largeAAAFix
Aaon white
15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #925eba as the text (4.53:1)
  • AAA: use #ad86cb as the text (7.05:1)
  • AA: or shift the background to #8f8f8f (4.64:1)
  • AAA: or shift the background to #b3b3b3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331d44 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

#331d44 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331d44
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 #331d44 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331d44-b79cc4-c2cb62-2d1f2d-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