Color

#252f31

#252f31
hex#252f31
rgbrgb(37, 47, 49)
hslhsl(190, 14%, 17%)
oklchoklch(0.297 0.014 211.1)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0265

Colors that go with #252f31

Amber, Blue and Blue Violet 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 →

#312725

#25312d · #252931

#31252f · #2f3125

Split-complementary

Open in tool →

#312529 · #312d25

#2d2531 · #312725 · #293125

Contrast

#252f31 as textRatioAAAA largeAAAFix
Aaon white
13.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #607b80 as the text (4.64:1)
  • AAA: use #829ca1 as the text (7.22:1)
  • AA: or shift the background to #949494 (4.53:1)
  • AAA: or shift the background to #bababa (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #252f31 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#252f31 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #252f31
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 #252f31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/252f31-a2b6be-df4e7c-1f252d-e9f1ef?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