Color

#1b2823

#1b2823
hex#1b2823
rgbrgb(27, 40, 35)
hslhsl(157, 19%, 13%)
oklchoklch(0.263 0.02 169.1)
Closest name: Underworld (#1e231c)Relative luminance 0.0187

Tints & shades

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

Harmonies

Complementary

Open in tool →

#271b20

#1b271c · #1b2627

#231b27 · #27231b

Split-complementary

Open in tool →

#271b26 · #271c1b

#1c1b27 · #271b20 · #26271b

Contrast

#1b2823 as textRatioAAAA largeAAAFix
Aaon white
15.28:1passpasspassPasses AAA — no fix needed.
Aaon black
1.37:1failfailfail
  • AA: use #577f70 as the text (4.67:1)
  • AAA: use #73a08f as the text (7.15:1)
  • AA: or shift the background to #8c8c8c (4.54:1)
  • AAA: or shift the background to #b0b0b0 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b2823 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1b2823 reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b2823
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 #1b2823 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b2823-a2beb7-d459c4-1f2c2d-e9f1ea?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