Color

#0d211f

#0d211f
hex#0d211f
rgbrgb(13, 33, 31)
hslhsl(174, 43%, 9%)
oklchoklch(0.23 0.026 187.1)
Closest name: Sunken Ship (#10252a)Relative luminance 0.0127

Colors that go with #0d211f

Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#210d0f

#0d2115 · #0d1921

#1f0d21 · #211f0d

Split-complementary

Open in tool →

#210d19 · #21150d

#150d21 · #210d0f · #19210d

Contrast

#0d211f as textRatioAAAA largeAAAFix
Aaon white
16.74:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #34837b as the text (4.68:1)
  • AAA: use #41a49a as the text (7:1)
  • AA: or shift the background to #858585 (4.54:1)
  • AAA: or shift the background to #a8a8a8 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d211f 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

#0d211f reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d211f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0d211f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d211f-a2bebe-d459a1-1f292d-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