Color

#818ca7

#818ca7
hex#818ca7
rgbrgb(129, 140, 167)
hslhsl(223, 18%, 58%)
oklchoklch(0.641 0.043 267.7)
Closest name: Cool Gray (#8c92ac)Relative luminance 0.2621

Colors that go with #818ca7

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 #818ca7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a79c81

#819fa7 · #8981a7

#a7818c · #8ca781

Split-complementary

Open in tool →

#a78981 · #9fa781

#a7819f · #a79c81 · #81a789

Contrast

#818ca7 as textRatioAAAA largeAAAFix
Aaon white
3.36:1failpassfail
  • AA: use #697696 as the text (4.53:1)
  • AAA: use #4d576f as the text (7.22:1)
  • AA: or shift the background to #242424 (4.61:1)
Aaon black
6.24:1passpassfail
  • AAA: use #8d97b0 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #818ca7 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 #818ca7
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 #818ca7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/818ca7-9ca3c4-df704e-211f2d-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