Color

#728ea1

#728ea1
hex#728ea1
rgbrgb(114, 142, 161)
hslhsl(204, 20%, 54%)
oklchoklch(0.632 0.043 238)
Closest name: Cavolo Nero (#72939e)Relative luminance 0.255

Colors that go with #728ea1

Charcoal, Copper and Blush Pink 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 #728ea1

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a18572

#72a19c · #7277a1

#a1728e · #8ea172

Split-complementary

Open in tool →

#a17277 · #a19c72

#9c72a1 · #a18572 · #77a172

Contrast

#728ea1 as textRatioAAAA largeAAAFix
Aaon white
3.44:1failpassfail
  • AA: use #5e7a8d as the text (4.52:1)
  • AAA: use #455a68 as the text (7.2:1)
  • AA: or shift the background to #242424 (4.51:1)
Aaon black
6.1:1passpassfail
  • AAA: use #829bab as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #728ea1 as the background.

Brands using this color

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

Palettes built around it

mcpConnect your agent — build around #728ea1
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 #728ea1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/728ea1-9cafc4-df4e5a-1f222d-e9f1f0?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