Color

#23101b

#23101b
hex#23101b
rgbrgb(35, 16, 27)
hslhsl(325, 37%, 10%)
oklchoklch(0.205 0.037 345.1)
Closest name: Shot in the Dark (#1d0d1d)Relative luminance 0.0081

Tints & shades

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

Harmonies

Complementary

Open in tool →

#102318

#211023 · #231012

#1b2310 · #101b23

Split-complementary

Open in tool →

#122310 · #102321

#232110 · #102318 · #101223

Contrast

#23101b as textRatioAAAA largeAAAFix
Aaon white
18.08:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #b2578c as the text (4.63:1)
  • AAA: use #c581a9 as the text (7.09:1)
  • AA: or shift the background to #808080 (4.58:1)
  • AAA: or shift the background to #a3a3a3 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23101b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#23101b reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23101b
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 #23101b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23101b-c19faf-69cb62-2d1f21-f0e9f1?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