Color

#0b424b

#0b424b
hex#0b424b
rgbrgb(11, 66, 75)
hslhsl(188, 74%, 17%)
oklchoklch(0.35 0.056 211.4)
Closest name: Cold and Dark (#154250)Relative luminance 0.0448

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4b140b

#0b4b34 · #0b234b

#4b0b43 · #434b0b

Split-complementary

Open in tool →

#4b0b23 · #4b340b

#340b4b · #4b140b · #234b0b

Contrast

#0b424b as textRatioAAAA largeAAAFix
Aaon white
11.08:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #168292 as the text (4.64:1)
  • AAA: use #1ca5ba as the text (7.14:1)
  • AA: or shift the background to #a6a6a6 (4.55:1)
  • AAA: or shift the background to #cfcfcf (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b424b as the background.

Brands using this color

Fonts for this mood

#0b424b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b424b
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 #0b424b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b424b-a2b7be-df4e81-1f252d-e9f1ee?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