Color

#331843

#331843
hex#331843
rgbrgb(51, 24, 67)
hslhsl(278, 47%, 18%)
oklchoklch(0.27 0.082 311.1)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0176

Colors that go with #331843

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 →

#284318

#1e1843 · #43183e

#433418 · #184334

Split-complementary

Open in tool →

#3e4318 · #18431e

#431e18 · #284318 · #183e43

Contrast

#331843 as textRatioAAAA largeAAAFix
Aaon white
15.53:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #9b56c2 as the text (4.5:1)
  • AAA: use #b583d2 as the text (7.14:1)
  • AA: or shift the background to #8c8c8c (4.62:1)
  • AAA: or shift the background to #b0b0b0 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331843 as the background.

Brands using this color

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

Fonts for this mood

#331843 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331843
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 #331843 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331843-ba9cc4-bbcb62-2d1f2c-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