Color

#191b18

#191b18
hex#191b18
rgbrgb(25, 27, 24)
hslhsl(100, 6%, 10%)
oklchoklch(0.219 0.006 135)
Closest name: Coco’s Black (#1c1c1a)Relative luminance 0.0106

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1a181b

#1b1b18 · #181b18

#18191b · #1b1819

Split-complementary

Open in tool →

#18181b · #1b181b

#181b1b · #1a181b · #1b1818

Contrast

#191b18 as textRatioAAAA largeAAAFix
Aaon white
17.34:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #6e7769 as the text (4.51:1)
  • AAA: use #8f988b as the text (7.03:1)
  • AA: or shift the background to #828282 (4.51:1)
  • AAA: or shift the background to #a6a6a6 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #191b18 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#191b18 reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #191b18
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 #191b18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/191b18-a2beb0-c859d4-1f2d2b-eaf1e9?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