Color

#728fa1

#728fa1
hex#728fa1
rgbrgb(114, 143, 161)
hslhsl(203, 20%, 54%)
oklchoklch(0.634 0.043 235.6)
Closest name: Cavolo Nero (#72939e)Relative luminance 0.258

Colors that go with #728fa1

Charcoal, Copper and Crimson 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 #728fa1

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a18472

#72a19c · #7278a1

#a1728f · #8fa172

Split-complementary

Open in tool →

#a17278 · #a19c72

#9c72a1 · #a18472 · #78a172

Contrast

#728fa1 as textRatioAAAA largeAAAFix
Aaon white
3.41:1failpassfail
  • AA: use #5c788a as the text (4.66:1)
  • AAA: use #455b68 as the text (7.12:1)
  • AA: or shift the background to #242424 (4.55:1)
Aaon black
6.16:1passpassfail
  • AAA: use #7e99a9 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #728fa1 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 #728fa1
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 #728fa1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/728fa1-9cb0c4-df4e5d-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