Color

#1b1b18

#1b1b18
hex#1b1b18
rgbrgb(27, 27, 24)
hslhsl(60, 6%, 10%)
oklchoklch(0.221 0.006 106.9)
Closest name: Coco’s Black (#1c1c1a)Relative luminance 0.0108

Tints & shades

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

Harmonies

Complementary

Open in tool →

#18181b

#1b1a18 · #1a1b18

#181b1b · #1b181b

Split-complementary

Open in tool →

#181a1b · #1a181b

#181b1a · #18181b · #1b181a

Contrast

#1b1b18 as textRatioAAAA largeAAAFix
Aaon white
17.26:1passpasspassPasses AAA — no fix needed.
Aaon black
1.22:1failfailfail
  • AA: use #777769 as the text (4.63:1)
  • AAA: use #969688 as the text (7.01:1)
  • AA: or shift the background to #858585 (4.68:1)
  • AAA: or shift the background to #a6a6a6 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b1b18 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1b1b18 reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b1b18
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 #1b1b18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b1b18-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