Color

#333f48

#333f48
hex#333f48
rgbrgb(51, 63, 72)
hslhsl(206, 17%, 24%)
oklchoklch(0.361 0.022 240.7)
Closest name: Charcoal (#36454f)Relative luminance 0.0473

Colors that go with #333f48

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 →

#483c33

#334846 · #333448

#48333f · #3f4833

Split-complementary

Open in tool →

#483334 · #484633

#463348 · #483c33 · #344833

Contrast

#333f48 as textRatioAAAA largeAAAFix
Aaon white
10.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #617889 as the text (4.56:1)
  • AAA: use #8599a8 as the text (7.12:1)
  • AA: or shift the background to #a8a8a8 (4.54:1)
  • AAA: or shift the background to #d1d1d1 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #333f48 as the background.

Brands using this color

Fonts for this mood

#333f48 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #333f48
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 #333f48 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/333f48-9caec4-df4e56-1f212d-e9f1f1?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