Color

#304550

#304550
hex#304550
rgbrgb(48, 69, 80)
hslhsl(201, 25%, 25%)
oklchoklch(0.377 0.032 231.5)
Closest name: Charcoal (#36454f)Relative luminance 0.0546

Colors that go with #304550

Dark Olive Green, Steel Blue and Teal 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 →

#503b30

#30504b · #303550

#503045 · #455030

Split-complementary

Open in tool →

#503035 · #504b30

#4b3050 · #503b30 · #355030

Contrast

#304550 as textRatioAAAA largeAAAFix
Aaon white
10.03:1passpasspassPasses AAA — no fix needed.
Aaon black
2.09:1failfailfail
  • AA: use #567b8f as the text (4.63:1)
  • AAA: use #799caf as the text (7.19:1)
  • AA: or shift the background to #b0b0b0 (4.63:1)
  • AAA: or shift the background to #d9d9d9 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #304550 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#304550 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #304550
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 #304550 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/304550-9cb1c4-df4e62-1f222d-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