Color

#818fa7

#818fa7
hex#818fa7
rgbrgb(129, 143, 167)
hslhsl(218, 18%, 58%)
oklchoklch(0.647 0.039 261.2)
Closest name: Cool Gray (#8c92ac)Relative luminance 0.271

Colors that go with #818fa7

Charcoal, Copper and Denim 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 #818fa7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a79981

#81a2a7 · #8681a7

#a7818f · #8fa781

Split-complementary

Open in tool →

#a78681 · #a2a781

#a781a2 · #a79981 · #81a786

Contrast

#818fa7 as textRatioAAAA largeAAAFix
Aaon white
3.27:1failpassfail
  • AA: use #667793 as the text (4.54:1)
  • AAA: use #4b576c as the text (7.29:1)
  • AA: or shift the background to #262626 (4.63:1)
Aaon black
6.42:1passpassfail
  • AAA: use #8a97ad 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 #818fa7 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 #818fa7
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 #818fa7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/818fa7-9ca6c4-df644e-201f2d-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