Color

#331c45

#331c45
hex#331c45
rgbrgb(51, 28, 69)
hslhsl(274, 42%, 19%)
oklchoklch(0.278 0.077 308.1)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0196

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2e451c

#1f1c45 · #451c42

#45331c · #1c4533

Split-complementary

Open in tool →

#42451c · #1c451f

#451f1c · #2e451c · #1c4245

Contrast

#331c45 as textRatioAAAA largeAAAFix
Aaon white
15.08:1passpasspassPasses AAA — no fix needed.
Aaon black
1.39:1failfailfail
  • AA: use #9560be as the text (4.69:1)
  • AAA: use #b088ce as the text (7.26:1)
  • AA: or shift the background to #8f8f8f (4.66:1)
  • AAA: or shift the background to #b3b3b3 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331c45 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

#331c45 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331c45
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 #331c45 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331c45-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