Color

#728097

#728097
hex#728097
rgbrgb(114, 128, 151)
hslhsl(217, 15%, 52%)
oklchoklch(0.597 0.039 260.3)
Closest name: Slate Gray (#708090)Relative luminance 0.2125

Colors that go with #728097

Charcoal, Copper 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#978972

#729397 · #777297

#977280 · #809772

Split-complementary

Open in tool →

#977772 · #939772

#977293 · #978972 · #729777

Contrast

#728097 as textRatioAAAA largeAAAFix
Aaon white
4:1failpassfail
  • AA: use #68768d as the text (4.6:1)
  • AAA: use #4e596a as the text (7.09:1)
  • AA: or shift the background to #141414 (4.61:1)
Aaon black
5.25:1passpassfail
  • AAA: use #8d98aa as the text (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 #728097 as the background.

Brands using this color

mcpConnect your agent — build around #728097
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 #728097 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/728097-9ca7c4-df624e-201f2d-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