Color

#0b3737

#0b3737
hex#0b3737
rgbrgb(11, 55, 55)
hslhsl(180, 67%, 13%)
oklchoklch(0.308 0.046 195)
Closest name: Elite Teal (#133337)Relative luminance 0.0308

Tints & shades

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

Harmonies

Complementary

Open in tool →

#370b0b

#0b3721 · #0b2137

#370b37 · #37370b

Split-complementary

Open in tool →

#370b21 · #37210b

#210b37 · #370b0b · #21370b

Contrast

#0b3737 as textRatioAAAA largeAAAFix
Aaon white
13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.62:1failfailfail
  • AA: use #1a8484 as the text (4.68:1)
  • AAA: use #21a6a6 as the text (7.07:1)
  • AA: or shift the background to #999999 (4.56:1)
  • AAA: or shift the background to #bfbfbf (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 #0b3737 as the background.

Brands using this color

Fonts for this mood

#0b3737 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b3737
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 #0b3737 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b3737-a2bbbe-d45994-1f272d-e9f1ed?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