Color

#2d3439

#2d3439
hex#2d3439
rgbrgb(45, 52, 57)
hslhsl(205, 12%, 20%)
oklchoklch(0.32 0.013 239)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0331

Colors that go with #2d3439

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 →

#39322d

#2d3938 · #2d2e39

#392d34 · #34392d

Split-complementary

Open in tool →

#392d2e · #39382d

#382d39 · #39322d · #2e392d

Contrast

#2d3439 as textRatioAAAA largeAAAFix
Aaon white
12.64:1passpasspassPasses AAA — no fix needed.
Aaon black
1.66:1failfailfail
  • AA: use #677883 as the text (4.59:1)
  • AAA: use #8a99a3 as the text (7.17:1)
  • AA: or shift the background to #9c9c9c (4.6:1)
  • AAA: or shift the background to #c2c2c2 (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 #2d3439 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2d3439 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d3439
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 #2d3439 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d3439-9cafc4-df4e58-1f212d-e9f1f0?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