Color

#858fb7

#858fb7
hex#858fb7
rgbrgb(133, 143, 183)
hslhsl(228, 26%, 62%)
oklchoklch(0.657 0.061 273.7)
Closest name: Galactic Gossamer (#7f8cb8)Relative luminance 0.2805

Colors that go with #858fb7

Charcoal, Amber and Copper 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 #858fb7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b7ad85

#85a8b7 · #9485b7

#b7858f · #8fb785

Split-complementary

Open in tool →

#b79485 · #a8b785

#b785a8 · #b7ad85 · #85b794

Contrast

#858fb7 as textRatioAAAA largeAAAFix
Aaon white
3.18:1failpassfail
  • AA: use #6874a6 as the text (4.53:1)
  • AAA: use #4b5681 as the text (7.13:1)
  • AA: or shift the background to #292929 (4.58:1)
Aaon black
6.61:1passpassfail
  • AAA: use #8b95bb as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #858fb7 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 #858fb7
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 #858fb7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/858fb7-9c9fc4-df7c4e-231f2d-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