Color

#213336

#213336
hex#213336
rgbrgb(33, 51, 54)
hslhsl(189, 24%, 17%)
oklchoklch(0.307 0.024 208.9)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0296

Colors that go with #213336

Amber, Blue and Blush Pink 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 →

#362421

#21362e · #212836

#362133 · #333621

Split-complementary

Open in tool →

#362128 · #362e21

#2e2136 · #362421 · #283621

Contrast

#213336 as textRatioAAAA largeAAAFix
Aaon white
13.2:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #517d85 as the text (4.62:1)
  • AAA: use #6e9da6 as the text (7.04:1)
  • AA: or shift the background to #999999 (4.63:1)
  • AAA: or shift the background to #bdbdbd (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #213336 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#213336 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #213336
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 #213336 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/213336-a2b7be-df4e7e-1f252d-e9f1ee?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