Color

#2d3339

#2d3339
hex#2d3339
rgbrgb(45, 51, 57)
hslhsl(210, 12%, 20%)
oklchoklch(0.318 0.014 248.3)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0322

Tints & shades

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

Harmonies

Complementary

Open in tool →

#39332d

#2d3939 · #2d2d39

#392d33 · #33392d

Split-complementary

Open in tool →

#392d2d · #39392d

#392d39 · #39332d · #2d392d

Contrast

#2d3339 as textRatioAAAA largeAAAFix
Aaon white
12.77:1passpasspassPasses AAA — no fix needed.
Aaon black
1.64:1failfailfail
  • AA: use #697886 as the text (4.63:1)
  • AAA: use #8d99a5 as the text (7.23:1)
  • AA: or shift the background to #9c9c9c (4.65:1)
  • AAA: or shift the background to #c2c2c2 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d3339 as the background.

Brands using this color

Fonts for this mood

#2d3339 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d3339
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 #2d3339 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d3339-9cabc4-df514e-1f202d-e9f1f1?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