Color

#42474c

#42474c
hex#42474c
rgbrgb(66, 71, 76)
hslhsl(210, 7%, 28%)
oklchoklch(0.395 0.011 248.1)
Closest name: Arsenic (#3b444b)Relative luminance 0.0619

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4c4742

#424c4c · #42424c

#4c4247 · #474c42

Split-complementary

Open in tool →

#4c4242 · #4c4c42

#4c424c · #4c4742 · #424c42

Contrast

#42474c as textRatioAAAA largeAAAFix
Aaon white
9.39:1passpasspassPasses AAA — no fix needed.
Aaon black
2.24:1failfailfail
  • AA: use #6f7880 as the text (4.67:1)
  • AAA: use #8f969e as the text (7.02:1)
  • AA: or shift the background to #b5b5b5 (4.58:1)
  • AAA: or shift the background to #e0e0e0 (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 #42474c 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

#42474c reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42474c
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 #42474c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42474c-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