Color

#333638

#333638
hex#333638
rgbrgb(51, 54, 56)
hslhsl(204, 5%, 21%)
oklchoklch(0.331 0.005 236.7)
Closest name: Dark Charcoal (#333232)Relative luminance 0.0363

Tints & shades

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

Harmonies

Complementary

Open in tool →

#383533

#333838 · #333338

#383336 · #363833

Split-complementary

Open in tool →

#383333 · #383833

#383338 · #383533 · #333833

Contrast

#333638 as textRatioAAAA largeAAAFix
Aaon white
12.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #6f767b as the text (4.55:1)
  • AAA: use #91979c as the text (7.11:1)
  • AA: or shift the background to #9e9e9e (4.54:1)
  • AAA: or shift the background to #c7c7c7 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #333638 as the background.

Brands using this color

Fonts for this mood

#333638 reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #333638
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 #333638 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/333638-a2beb0-c859d4-1f2d2b-eaf1e9?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