Color

#2f303d

#2f303d
hex#2f303d
rgbrgb(47, 48, 61)
hslhsl(236, 13%, 21%)
oklchoklch(0.314 0.023 281.5)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0306

Colors that go with #2f303d

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 →

#3d3c2f

#2f363d · #352f3d

#3d2f30 · #303d2f

Split-complementary

Open in tool →

#3d352f · #363d2f

#3d2f36 · #3d3c2f · #2f3d35

Contrast

#2f303d as textRatioAAAA largeAAAFix
Aaon white
13.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #727492 as the text (4.63:1)
  • AAA: use #9496ad as the text (7.23:1)
  • AA: or shift the background to #999999 (4.58:1)
  • AAA: or shift the background to #bfbfbf (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 #2f303d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2f303d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f303d
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 #2f303d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f303d-9e9cc4-df8f4e-241f2d-e9eef1?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