Color

#212330

#212330
hex#212330
rgbrgb(33, 35, 48)
hslhsl(232, 19%, 16%)
oklchoklch(0.26 0.025 277.7)
Closest name: Black Velvet (#222233)Relative luminance 0.0174

Colors that go with #212330

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 →

#312e21

#212b31 · #272131

#312123 · #233121

Split-complementary

Open in tool →

#312721 · #2b3121

#31212b · #312e21 · #213127

Contrast

#212330 as textRatioAAAA largeAAAFix
Aaon white
15.58:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #6d749c as the text (4.63:1)
  • AAA: use #8f94b3 as the text (7.05:1)
  • AA: or shift the background to #8a8a8a (4.51:1)
  • AAA: or shift the background to #b0b0b0 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212330 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#212330 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #212330
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 #212330 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212330-9c9dc4-df864e-231f2d-e9eef1?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