Color

#304554

#304554
hex#304554
rgbrgb(48, 69, 84)
hslhsl(205, 27%, 26%)
oklchoklch(0.379 0.037 240)
Closest name: Charcoal (#36454f)Relative luminance 0.0552

Colors that go with #304554

Teal, Sienna 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 →

#543f30

#305451 · #303354

#543045 · #455430

Split-complementary

Open in tool →

#543033 · #545130

#513054 · #543f30 · #335430

Contrast

#304554 as textRatioAAAA largeAAAFix
Aaon white
9.98:1passpasspassPasses AAA — no fix needed.
Aaon black
2.1:1failfailfail
  • AA: use #567b95 as the text (4.66:1)
  • AAA: use #7a9bb3 as the text (7.17:1)
  • AA: or shift the background to #b0b0b0 (4.6:1)
  • AAA: or shift the background to #d9d9d9 (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 #304554 as the background.

Brands using this color

Fonts for this mood

#304554 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #304554
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 #304554 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/304554-9cafc4-df4e58-1f212d-e9f1f0?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