Color

#31312f

#31312f
hex#31312f
rgbrgb(49, 49, 47)
hslhsl(60, 2%, 19%)
oklchoklch(0.312 0.004 106.6)
Closest name: Dark Charcoal (#333232)Relative luminance 0.0305

Colors that go with #31312f

Amber, Blue and Blush Pink 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 →

#2f2f31

#31302f · #30312f

#2f3131 · #312f31

Split-complementary

Open in tool →

#2f3031 · #302f31

#2f3130 · #2f2f31 · #312f30

Contrast

#31312f as textRatioAAAA largeAAAFix
Aaon white
13.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #757570 as the text (4.53:1)
  • AAA: use #969692 as the text (7.07:1)
  • AA: or shift the background to #999999 (4.58:1)
  • AAA: or shift the background to #bfbfbf (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 #31312f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#31312f reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #31312f
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 #31312f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31312f-a2beb0-c859d4-1f2d2b-eaf1e9?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