Color

#0d211e

#0d211e
hex#0d211e
rgbrgb(13, 33, 30)
hslhsl(171, 43%, 9%)
oklchoklch(0.23 0.027 183.1)
Closest name: Sunken Ship (#10252a)Relative luminance 0.0127

Colors that go with #0d211e

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 →

#210d10

#0d2114 · #0d1a21

#1e0d21 · #211e0d

Split-complementary

Open in tool →

#210d1a · #21140d

#140d21 · #210d10 · #1a210d

Contrast

#0d211e as textRatioAAAA largeAAAFix
Aaon white
16.75:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #348377 as the text (4.66:1)
  • AAA: use #43a899 as the text (7.3:1)
  • AA: or shift the background to #858585 (4.54:1)
  • AAA: or shift the background to #a8a8a8 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d211e 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

#0d211e reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d211e
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 #0d211e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d211e-a2bebd-d459a7-1f292d-e9f1ec?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