Color

#2b312b

#2b312b
hex#2b312b
rgbrgb(43, 49, 43)
hslhsl(120, 7%, 18%)
oklchoklch(0.305 0.013 145.2)
Closest name: Marshland (#2b2e26)Relative luminance 0.0288

Tints & shades

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

Harmonies

Complementary

Open in tool →

#312b31

#2e312b · #2b312e

#2b2b31 · #312b2b

Split-complementary

Open in tool →

#2e2b31 · #312b2e

#2b2e31 · #312b31 · #312e2b

Contrast

#2b312b as textRatioAAAA largeAAAFix
Aaon white
13.32:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #6b7b6b as the text (4.67:1)
  • AAA: use #8a998a as the text (7:1)
  • AA: or shift the background to #969696 (4.5:1)
  • AAA: or shift the background to #bdbdbd (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 #2b312b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2b312b reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b312b
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 #2b312b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b312b-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