Color

#23151f

#23151f
hex#23151f
rgbrgb(35, 21, 31)
hslhsl(317, 25%, 11%)
oklchoklch(0.219 0.029 337.5)
Closest name: Bats Cloak (#1f1518)Relative luminance 0.0099

Tints & shades

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

Harmonies

Complementary

Open in tool →

#152319

#201523 · #231518

#1f2315 · #151f23

Split-complementary

Open in tool →

#182315 · #152320

#232015 · #152319 · #151823

Contrast

#23151f as textRatioAAAA largeAAAFix
Aaon white
17.52:1passpasspassPasses AAA — no fix needed.
Aaon black
1.2:1failfailfail
  • AA: use #9f608d as the text (4.53:1)
  • AAA: use #b889ab as the text (7.2:1)
  • AA: or shift the background to #828282 (4.56:1)
  • AAA: or shift the background to #a6a6a6 (7.2:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/23151f-c19fb3-77cb62-2d1f23-efe9f1?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