Color

#312f2f

#312f2f
hex#312f2f
rgbrgb(49, 47, 47)
hslhsl(0, 2%, 19%)
oklchoklch(0.307 0.003 17.3)
Closest name: Carbon Fibre (#2e2e2e)Relative luminance 0.0289

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2f3131

#312f30 · #31302f

#2f312f · #2f2f31

Split-complementary

Open in tool →

#2f3130 · #2f3031

#30312f · #2f3131 · #302f31

Contrast

#312f2f as textRatioAAAA largeAAAFix
Aaon white
13.31:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #7a7575 as the text (4.63:1)
  • AAA: use #999494 as the text (7.02:1)
  • AA: or shift the background to #999999 (4.67:1)
  • AAA: or shift the background to #bdbdbd (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #312f2f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#312f2f reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #312f2f
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 #312f2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/312f2f-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