Color

#304545

#304545
hex#304545
rgbrgb(48, 69, 69)
hslhsl(180, 18%, 23%)
oklchoklch(0.373 0.026 196.1)
Closest name: Arsenic (#3b444b)Relative luminance 0.0531

Tints & shades

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

Harmonies

Complementary

Open in tool →

#453030

#30453b · #303b45

#453045 · #454530

Split-complementary

Open in tool →

#45303b · #453b30

#3b3045 · #453030 · #3b4530

Contrast

#304545 as textRatioAAAA largeAAAFix
Aaon white
10.18:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #567b7b as the text (4.51:1)
  • AAA: use #729d9d as the text (7.03:1)
  • AA: or shift the background to #adadad (4.54:1)
  • AAA: or shift the background to #d6d6d6 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #304545 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

#304545 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #304545
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 #304545 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/304545-a2bbbe-d45994-1f272d-e9f1ed?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