Color

#4c5567

#4c5567
hex#4c5567
rgbrgb(76, 85, 103)
hslhsl(220, 15%, 35%)
oklchoklch(0.449 0.032 264.2)
Closest name: Black Orchid (#525463)Relative luminance 0.0901

Colors that go with #4c5567

Blue, Cadet Blue and Champagne lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #4c5567

Tints & shades

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

Harmonies

Complementary

Open in tool →

#675e4c

#4c6267 · #504c67

#674c55 · #55674c

Split-complementary

Open in tool →

#67504c · #62674c

#674c62 · #675e4c · #4c6750

Contrast

#4c5567 as textRatioAAAA largeAAAFix
Aaon white
7.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2.8:1failfailfail
  • AA: use #6a7790 as the text (4.65:1)
  • AAA: use #8d97aa as the text (7.14:1)
  • AA: or shift the background to #c9c9c9 (4.53:1)
  • AAA: or shift the background to #fafafa (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4c5567 as the background.

Brands using this color

mcpConnect your agent — build around #4c5567
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #4c5567 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4c5567-9ca5c4-df694e-211f2d-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