Color

#0b404b

#0b404b
hex#0b404b
rgbrgb(11, 64, 75)
hslhsl(190, 74%, 17%)
oklchoklch(0.344 0.055 215.3)
Closest name: Cold and Dark (#154250)Relative luminance 0.0425

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4b160b

#0b4b36 · #0b214b

#4b0b41 · #414b0b

Split-complementary

Open in tool →

#4b0b21 · #4b360b

#360b4b · #4b160b · #214b0b

Contrast

#0b404b as textRatioAAAA largeAAAFix
Aaon white
11.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #178197 as the text (4.62:1)
  • AAA: use #1da4bf as the text (7.11:1)
  • AA: or shift the background to #a3a3a3 (4.5:1)
  • AAA: or shift the background to #cccccc (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b404b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#0b404b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b404b
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 #0b404b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b404b-a2b6be-df4e7c-1f252d-e9f1ef?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