Color

#304555

#304555
hex#304555
rgbrgb(48, 69, 85)
hslhsl(206, 28%, 26%)
oklchoklch(0.38 0.038 241.8)
Closest name: Arsenic (#3b444b)Relative luminance 0.0554

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#554030

#305552 · #303255

#553045 · #455530

Split-complementary

Open in tool →

#553032 · #555230

#523055 · #554030 · #325530

Contrast

#304555 as textRatioAAAA largeAAAFix
Aaon white
9.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #547a96 as the text (4.6:1)
  • AAA: use #799ab4 as the text (7.09:1)
  • AA: or shift the background to #b0b0b0 (4.59:1)
  • AAA: or shift the background to #d9d9d9 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #304555 as the background.

Brands using this color

Fonts for this mood

#304555 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #304555
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #304555 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/304555-9caec4-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