Color

#878bb5

#878bb5
hex#878bb5
rgbrgb(135, 139, 181)
hslhsl(235, 24%, 62%)
oklchoklch(0.649 0.063 280.3)
Closest name: Galactic Gossamer (#7f8cb8)Relative luminance 0.2695

Colors that go with #878bb5

Charcoal, Copper and Dark Goldenrod 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 #878bb5

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b5b187

#87a2b5 · #9a87b5

#b5878b · #8bb587

Split-complementary

Open in tool →

#b59a87 · #a2b587

#b587a2 · #b5b187 · #87b59a

Contrast

#878bb5 as textRatioAAAA largeAAAFix
Aaon white
3.29:1failpassfail
  • AA: use #6e72a6 as the text (4.54:1)
  • AAA: use #4f5482 as the text (7.18:1)
  • AA: or shift the background to #262626 (4.61:1)
Aaon black
6.39:1passpassfail
  • AAA: use #9094bb as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #878bb5 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 #878bb5
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 #878bb5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/878bb5-9e9cc4-df8d4e-241f2d-e9eef1?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