Color

#312b2f

#312b2f
hex#312b2f
rgbrgb(49, 43, 47)
hslhsl(320, 7%, 18%)
oklchoklch(0.297 0.011 338)
Closest name: Mystical Shadow (#352b30)Relative luminance 0.0259

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2b312d

#302b31 · #312b2c

#2f312b · #2b2f31

Split-complementary

Open in tool →

#2c312b · #2b3130

#31302b · #2b312d · #2b2c31

Contrast

#312b2f as textRatioAAAA largeAAAFix
Aaon white
13.84:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #83727d as the text (4.67:1)
  • AAA: use #a0929b as the text (7.08:1)
  • AA: or shift the background to #949494 (4.56:1)
  • AAA: or shift the background to #bababa (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #312b2f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#312b2f reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #312b2f
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 #312b2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/312b2f-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