Color

#0b2b47

#0b2b47
hex#0b2b47
rgbrgb(11, 43, 71)
hslhsl(208, 73%, 16%)
oklchoklch(0.282 0.063 248.7)
Closest name: Midnight Ocean (#0f2d4d)Relative luminance 0.0225

Colors that go with #0b2b47

Charcoal, Crimson and Rust 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 →

#47270b

#0b4745 · #0b0d47

#470b2b · #2b470b

Split-complementary

Open in tool →

#470b0d · #47450b

#450b47 · #47270b · #0d470b

Contrast

#0b2b47 as textRatioAAAA largeAAAFix
Aaon white
14.48:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #1f78c7 as the text (4.57:1)
  • AAA: use #4a9ce3 as the text (7.16:1)
  • AA: or shift the background to #919191 (4.59:1)
  • AAA: or shift the background to #b5b5b5 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b2b47 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b2b47 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b2b47
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 #0b2b47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b2b47-9cadc4-df4e51-1f212d-e9f1f1?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