Color

#231d25

#231d25
hex#231d25
rgbrgb(35, 29, 37)
hslhsl(285, 12%, 13%)
oklchoklch(0.241 0.017 317.6)
Closest name: Night Demons (#201b20)Relative luminance 0.0137

Colors that go with #231d25

Charcoal, Amber and Blue 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 →

#1f251d

#1f1d25 · #251d23

#25231d · #1d2523

Split-complementary

Open in tool →

#23251d · #1d251f

#251f1d · #1f251d · #1d2325

Contrast

#231d25 as textRatioAAAA largeAAAFix
Aaon white
16.48:1passpasspassPasses AAA — no fix needed.
Aaon black
1.27:1failfailfail
  • AA: use #846e8c as the text (4.59:1)
  • AAA: use #a290a7 as the text (7.08:1)
  • AA: or shift the background to #878787 (4.59:1)
  • AAA: or shift the background to #ababab (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #231d25 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#231d25 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #231d25
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 #231d25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/231d25-bc9fc1-afcb62-2d1f2b-ebe9f1?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