Color

#131d26

#131d26
hex#131d26
rgbrgb(19, 29, 38)
hslhsl(208, 33%, 11%)
oklchoklch(0.226 0.023 246.2)
Closest name: Black Stallion (#0e191c)Relative luminance 0.0116

Colors that go with #131d26

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 →

#251b13

#132525 · #131325

#25131d · #1d2513

Split-complementary

Open in tool →

#251313 · #252513

#251325 · #251b13 · #132513

Contrast

#131d26 as textRatioAAAA largeAAAFix
Aaon white
17.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #507a9f as the text (4.63:1)
  • AAA: use #779bbb as the text (7.19:1)
  • AA: or shift the background to #858585 (4.62:1)
  • AAA: or shift the background to #a6a6a6 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #131d26 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#131d26 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #131d26
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 #131d26 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131d26-9cadc4-df4e51-1f212d-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