Color

#0b448e

#0b448e
hex#0b448e
rgbrgb(11, 68, 142)
hslhsl(214, 86%, 30%)
oklchoklch(0.399 0.135 257.7)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0616

Colors that go with #0b448e

Charcoal, Crimson and Steel 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.

Real palettes that use #0b448e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8e550b

#0b868e · #130b8e

#8e0b44 · #448e0b

Split-complementary

Open in tool →

#8e130b · #868e0b

#8e0b86 · #8e550b · #0b8e13

Contrast

#0b448e as textRatioAAAA largeAAAFix
Aaon white
9.41:1passpasspassPasses AAA — no fix needed.
Aaon black
2.23:1failfailfail
  • AA: use #1271ed as the text (4.61:1)
  • AAA: use #5499f2 as the text (7.22:1)
  • AA: or shift the background to #b5b5b5 (4.59:1)
  • AAA: or shift the background to #e0e0e0 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b448e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b448e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b448e
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 #0b448e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b448e-9ca9c4-df5a4e-1f1f2d-e9f0f1?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