Color

#0b231d

#0b231d
hex#0b231d
rgbrgb(11, 35, 29)
hslhsl(165, 52%, 9%)
oklchoklch(0.235 0.032 174.7)
Closest name: Nightmare (#112211)Relative luminance 0.0136

Colors that go with #0b231d

Charcoal, Rust and Sea Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#230b11

#0b2311 · #0b1d23

#1d0b23 · #231d0b

Split-complementary

Open in tool →

#230b1d · #23110b

#110b23 · #230b11 · #1d230b

Contrast

#0b231d as textRatioAAAA largeAAAFix
Aaon white
16.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.27:1failfailfail
  • AA: use #2a846d as the text (4.62:1)
  • AAA: use #35a78a as the text (7.05:1)
  • AA: or shift the background to #878787 (4.59:1)
  • AAA: or shift the background to #ababab (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b231d as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#0b231d reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b231d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0b231d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b231d-a2beba-d459b3-1f2b2d-e9f1eb?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