Color

#78818c

#78818c
hex#78818c
rgbrgb(120, 129, 140)
hslhsl(213, 8%, 51%)
oklchoklch(0.599 0.02 253.4)
Closest name: Slate Gray (#708090)Relative luminance 0.2159

Colors that go with #78818c

Charcoal, Champagne 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c8378

#788b8c · #79788c

#8c7881 · #818c78

Split-complementary

Open in tool →

#8c7978 · #8b8c78

#8c788b · #8c8378 · #788c79

Contrast

#78818c as textRatioAAAA largeAAAFix
Aaon white
3.95:1failpassfail
  • AA: use #6e7781 as the text (4.55:1)
  • AAA: use #525960 as the text (7.1:1)
  • AA: or shift the background to #171717 (4.54:1)
Aaon black
5.32:1passpassfail
  • AAA: use #8e969f as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #78818c as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#78818c reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #78818c
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 #78818c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/78818c-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