Color

#0b223c

#0b223c
hex#0b223c
rgbrgb(11, 34, 60)
hslhsl(212, 69%, 14%)
oklchoklch(0.249 0.057 253.5)
Closest name: Dark Eclipse (#112244)Relative luminance 0.0154

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c250b

#0b3b3c · #0d0b3c

#3c0b22 · #223c0b

Split-complementary

Open in tool →

#3c0d0b · #3b3c0b

#3c0b3b · #3c250b · #0b3c0d

Contrast

#0b223c as textRatioAAAA largeAAAFix
Aaon white
16.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #2675cf as the text (4.53:1)
  • AAA: use #5b9ae1 as the text (7.15:1)
  • AA: or shift the background to #8a8a8a (4.65:1)
  • AAA: or shift the background to #adadad (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b223c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b223c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b223c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #0b223c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b223c-9caac4-df564e-1f202d-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