Color

#0b101d

#0b101d
hex#0b101d
rgbrgb(11, 16, 29)
hslhsl(223, 45%, 8%)
oklchoklch(0.175 0.028 267.4)
Closest name: Midnight Edition (#0c121b)Relative luminance 0.0053

Colors that go with #0b101d

Charcoal, Amber and Blue 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 →

#1e180b

#0b1a1e · #0f0b1e

#1e0b10 · #101e0b

Split-complementary

Open in tool →

#1e0f0b · #1a1e0b

#1e0b1a · #1e180b · #0b1e0f

Contrast

#0b101d as textRatioAAAA largeAAAFix
Aaon white
18.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.11:1failfailfail
  • AA: use #5573be as the text (4.58:1)
  • AAA: use #7e94ce as the text (7.01:1)
  • AA: or shift the background to #7d7d7d (4.61:1)
  • AAA: or shift the background to #9e9e9e (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b101d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b101d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b101d
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 #0b101d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b101d-9ca3c4-df704e-211f2d-e9eff1?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