Color

#213335

#213335
hex#213335
rgbrgb(33, 51, 53)
hslhsl(186, 23%, 17%)
oklchoklch(0.306 0.024 204.7)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0295

Colors that go with #213335

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 →

#352321

#21352d · #212935

#352133 · #333521

Split-complementary

Open in tool →

#352129 · #352d21

#2d2135 · #352321 · #293521

Contrast

#213335 as textRatioAAAA largeAAAFix
Aaon white
13.21:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #517c81 as the text (4.55:1)
  • AAA: use #6f9fa5 as the text (7.18:1)
  • AA: or shift the background to #999999 (4.64:1)
  • AAA: or shift the background to #bdbdbd (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #213335 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#213335 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #213335
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 #213335 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/213335-a2b8be-df4e86-1f262d-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