Color

#4f757d

#4f757d
hex#4f757d
rgbrgb(79, 117, 125)
hslhsl(190, 23%, 40%)
oklchoklch(0.537 0.044 212.2)
Closest name: Calypso (#3d7188)Relative luminance 0.1587

Colors that go with #4f757d

Charcoal, Sienna and Amber 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 #4f757d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7d564f

#4f7d6e · #4f5e7d

#7d4f76 · #767d4f

Split-complementary

Open in tool →

#7d4f5e · #7d6e4f

#6e4f7d · #7d564f · #5e7d4f

Contrast

#4f757d as textRatioAAAA largeAAAFix
Aaon white
5.03:1passpassfail
  • AAA: use #3f5e64 as the text (7.01:1)
Aaon black
4.17:1failpassfail
  • AA: use #527c84 as the text (4.58:1)
  • AAA: use #729ea7 as the text (7.16:1)
  • AA: or shift the background to #f5f5f5 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4f757d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #4f757d
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 #4f757d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4f757d-a2b6be-df4e7c-1f252d-e9f1ef?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