Color

#331c3b

#331c3b
hex#331c3b
rgbrgb(51, 28, 59)
hslhsl(285, 36%, 17%)
oklchoklch(0.272 0.063 316.9)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0185

Tints & shades

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

Harmonies

Complementary

Open in tool →

#243b1c

#241c3b · #3b1c33

#3b331c · #1c3b33

Split-complementary

Open in tool →

#333b1c · #1c3b24

#3b241c · #243b1c · #1c333b

Contrast

#331c3b as textRatioAAAA largeAAAFix
Aaon white
15.33:1passpasspassPasses AAA — no fix needed.
Aaon black
1.37:1failfailfail
  • AA: use #9d5cb2 as the text (4.61:1)
  • AAA: use #b686c6 as the text (7.21:1)
  • AA: or shift the background to #8c8c8c (4.56:1)
  • AAA: or shift the background to #b0b0b0 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331c3b as the background.

Brands using this color

Fonts for this mood

#331c3b reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331c3b
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 #331c3b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331c3b-bc9fc1-afcb62-2d1f2b-ebe9f1?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