Color

#0d1d31

#0d1d31
hex#0d1d31
rgbrgb(13, 29, 49)
hslhsl(213, 58%, 12%)
oklchoklch(0.228 0.045 254.9)
Closest name: Dark Knight (#151931)Relative luminance 0.0119

Tints & shades

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

Harmonies

Complementary

Open in tool →

#30200d

#0d2f30 · #0f0d30

#300d1d · #1d300d

Split-complementary

Open in tool →

#300f0d · #2f300d

#300d2f · #30200d · #0d300f

Contrast

#0d1d31 as textRatioAAAA largeAAAFix
Aaon white
16.97:1passpasspassPasses AAA — no fix needed.
Aaon black
1.24:1failfailfail
  • AA: use #3476c5 as the text (4.54:1)
  • AAA: use #6698d6 as the text (7.03:1)
  • AA: or shift the background to #858585 (4.6:1)
  • AAA: or shift the background to #a8a8a8 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d1d31 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#0d1d31 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d1d31
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 #0d1d31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d1d31-9ca9c4-df584e-1f202d-e9f0f1?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