Color

#30353b

#30353b
hex#30353b
rgbrgb(48, 53, 59)
hslhsl(213, 10%, 21%)
oklchoklch(0.327 0.013 253)
Closest name: Dark Charcoal (#333232)Relative luminance 0.0349

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3b3630

#303a3b · #31303b

#3b3035 · #353b30

Split-complementary

Open in tool →

#3b3130 · #3a3b30

#3b303a · #3b3630 · #303b31

Contrast

#30353b as textRatioAAAA largeAAAFix
Aaon white
12.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.7:1failfailfail
  • AA: use #6c7784 as the text (4.61:1)
  • AAA: use #8f98a3 as the text (7.19:1)
  • AA: or shift the background to #9c9c9c (4.5:1)
  • AAA: or shift the background to #c4c4c4 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #30353b as the background.

Brands using this color

Fonts for this mood

#30353b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30353b
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 #30353b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30353b-9ca9c4-df584e-1f202d-e9f0f1?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