Color

#331f4d

#331f4d
hex#331f4d
rgbrgb(51, 31, 77)
hslhsl(266, 43%, 21%)
oklchoklch(0.29 0.083 301.5)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0222

Tints & shades

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

Harmonies

Complementary

Open in tool →

#394d1f

#1f224d · #4a1f4d

#4d321f · #1f4d32

Split-complementary

Open in tool →

#4d4a1f · #224d1f

#4d1f22 · #394d1f · #1f4d4a

Contrast

#331f4d as textRatioAAAA largeAAAFix
Aaon white
14.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.44:1failfailfail
  • AA: use #8b62c0 as the text (4.61:1)
  • AAA: use #a98ad0 as the text (7.23:1)
  • AA: or shift the background to #919191 (4.61:1)
  • AAA: or shift the background to #b5b5b5 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331f4d 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

#331f4d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331f4d
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 #331f4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331f4d-b29cc4-dfd74e-2b1f2d-e9eaf1?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