Color

#13151b

#13151b
hex#13151b
rgbrgb(19, 21, 27)
hslhsl(225, 17%, 9%)
oklchoklch(0.196 0.012 270.7)
Closest name: Back in Black (#16141c)Relative luminance 0.0075

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#1b1913

#13191b · #15131b

#1b1315 · #151b13

Split-complementary

Open in tool →

#1b1513 · #191b13

#1b1319 · #1b1913 · #131b15

Contrast

#13151b as textRatioAAAA largeAAAFix
Aaon white
18.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.15:1failfailfail
  • AA: use #6a7595 as the text (4.59:1)
  • AAA: use #8e96af as the text (7.13:1)
  • AA: or shift the background to #808080 (4.62:1)
  • AAA: or shift the background to #a1a1a1 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #13151b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#13151b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #13151b
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #13151b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/13151b-9ca1c4-df754e-221f2d-e9eff1?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