Color

#23151a

#23151a
hex#23151a
rgbrgb(35, 21, 26)
hslhsl(339, 25%, 11%)
oklchoklch(0.216 0.024 356.2)
Closest name: Bats Cloak (#1f1518)Relative luminance 0.0097

Tints & shades

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

Harmonies

Complementary

Open in tool →

#15231e

#231521 · #231715

#1a2315 · #151a23

Split-complementary

Open in tool →

#152317 · #152123

#212315 · #15231e · #171523

Contrast

#23151a as textRatioAAAA largeAAAFix
Aaon white
17.59:1passpasspassPasses AAA — no fix needed.
Aaon black
1.19:1failfailfail
  • AA: use #a16379 as the text (4.58:1)
  • AAA: use #b8899a as the text (7.08:1)
  • AA: or shift the background to #828282 (4.58:1)
  • AAA: or shift the background to #a6a6a6 (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23151a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#23151a reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23151a
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 #23151a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23151a-c49ca5-62cb74-2d211f-f1e9f0?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