Color

#435151

#435151
hex#435151
rgbrgb(67, 81, 81)
hslhsl(180, 9%, 29%)
oklchoklch(0.423 0.018 196.5)
Closest name: All Nighter (#455454)Relative luminance 0.0767

Tints & shades

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

Harmonies

Complementary

Open in tool →

#514343

#43514a · #434a51

#514351 · #515143

Split-complementary

Open in tool →

#51434a · #514a43

#4a4351 · #514343 · #4a5143

Contrast

#435151 as textRatioAAAA largeAAAFix
Aaon white
8.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #667a7a as the text (4.63:1)
  • AAA: use #859999 as the text (7.01:1)
  • AA: or shift the background to #bfbfbf (4.51:1)
  • AAA: or shift the background to #ededed (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #435151 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

#435151 reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #435151
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 #435151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/435151-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