Color

#0b281e

#0b281e
hex#0b281e
rgbrgb(11, 40, 30)
hslhsl(159, 57%, 10%)
oklchoklch(0.251 0.04 167.5)
Closest name: Nightmare (#112211)Relative luminance 0.0168

Colors that go with #0b281e

Charcoal, Crimson and Sienna 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 →

#280b15

#0b280f · #0b2428

#1e0b28 · #281e0b

Split-complementary

Open in tool →

#280b24 · #280f0b

#0f0b28 · #280b15 · #24280b

Contrast

#0b281e as textRatioAAAA largeAAAFix
Aaon white
15.71:1passpasspassPasses AAA — no fix needed.
Aaon black
1.34:1failfailfail
  • AA: use #248463 as the text (4.56:1)
  • AAA: use #2ea87d as the text (7.01:1)
  • AA: or shift the background to #8a8a8a (4.55:1)
  • AAA: or shift the background to #adadad (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b281e 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

#0b281e reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b281e
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 #0b281e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b281e-a2beb8-d459c0-1f2c2d-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