Color

#1d252b

#1d252b
hex#1d252b
rgbrgb(29, 37, 43)
hslhsl(206, 19%, 14%)
oklchoklch(0.259 0.016 240.7)
Closest name: Black Pearl (#1e272c)Relative luminance 0.0176

Colors that go with #1d252b

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 →

#2a231d

#1d2a2a · #1d1e2a

#2a1d25 · #252a1d

Split-complementary

Open in tool →

#2a1d1e · #2a2a1d

#2a1d2a · #2a231d · #1e2a1d

Contrast

#1d252b as textRatioAAAA largeAAAFix
Aaon white
15.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #5f788c as the text (4.55:1)
  • AAA: use #8399aa as the text (7.1:1)
  • AA: or shift the background to #8a8a8a (4.5:1)
  • AAA: or shift the background to #b0b0b0 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d252b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1d252b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d252b
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 #1d252b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d252b-9caec4-df4e56-1f212d-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