Color

#0d3a39

#0d3a39
hex#0d3a39
rgbrgb(13, 58, 57)
hslhsl(179, 63%, 14%)
oklchoklch(0.319 0.047 192.9)
Closest name: Rich Black (#004040)Relative luminance 0.0341

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a0d0e

#0d3a23 · #0d243a

#390d3a · #3a390d

Split-complementary

Open in tool →

#3a0d24 · #3a230d

#230d3a · #3a0d0e · #243a0d

Contrast

#0d3a39 as textRatioAAAA largeAAAFix
Aaon white
12.49:1passpasspassPasses AAA — no fix needed.
Aaon black
1.68:1failfailfail
  • AA: use #1e8583 as the text (4.74:1)
  • AAA: use #26a6a4 as the text (7.07:1)
  • AA: or shift the background to #9c9c9c (4.55:1)
  • AAA: or shift the background to #c2c2c2 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d3a39 as the background.

Brands using this color

Fonts for this mood

#0d3a39 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d3a39
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 #0d3a39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d3a39-a2bbbe-d45996-1f272d-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