Color

#858da3

#858da3
hex#858da3
rgbrgb(133, 141, 163)
hslhsl(224, 14%, 58%)
oklchoklch(0.644 0.034 269.6)
Closest name: Cool Gray (#8c92ac)Relative luminance 0.2668

Colors that go with #858da3

Charcoal, Copper and Denim 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 #858da3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a39b85

#859ca3 · #8c85a3

#a3858d · #8da385

Split-complementary

Open in tool →

#a38c85 · #9ca385

#a3859c · #a39b85 · #85a38c

Contrast

#858da3 as textRatioAAAA largeAAAFix
Aaon white
3.31:1failpassfail
  • AA: use #6b758e as the text (4.6:1)
  • AAA: use #51586c as the text (7.09:1)
  • AA: or shift the background to #262626 (4.57:1)
Aaon black
6.34:1passpassfail
  • AAA: use #8e95a9 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 #858da3 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 #858da3
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 #858da3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/858da3-9ca2c4-df724e-221f2d-e9eff1?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