Color

#78889b

#78889b
hex#78889b
rgbrgb(120, 136, 155)
hslhsl(213, 15%, 54%)
oklchoklch(0.621 0.034 252.8)
Closest name: lightslategray (#778899)Relative luminance 0.2397

Colors that go with #78889b

Charcoal, Copper and Champagne 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9b8b78

#789a9b · #7a789b

#9b7888 · #889b78

Split-complementary

Open in tool →

#9b7a78 · #9a9b78

#9b789a · #9b8b78 · #789b7a

Contrast

#78889b as textRatioAAAA largeAAAFix
Aaon white
3.62:1failpassfail
  • AA: use #66768a as the text (4.64:1)
  • AAA: use #4e5a6a as the text (7.01:1)
  • AA: or shift the background to #1f1f1f (4.55:1)
Aaon black
5.79:1passpassfail
  • AAA: use #8a97a8 as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #78889b as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #78889b
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 #78889b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/78889b-9ca9c4-df584e-1f202d-e9f0f1?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