Color

#818ba2

#818ba2
hex#818ba2
rgbrgb(129, 139, 162)
hslhsl(222, 15%, 57%)
oklchoklch(0.637 0.036 266.8)
Closest name: lightslategray (#778899)Relative luminance 0.2574

Colors that go with #818ba2

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a29881

#819ba2 · #8781a2

#a2818b · #8ba281

Split-complementary

Open in tool →

#a28781 · #9ba281

#a2819b · #a29881 · #81a287

Contrast

#818ba2 as textRatioAAAA largeAAAFix
Aaon white
3.42:1failpassfail
  • AA: use #6a7590 as the text (4.61:1)
  • AAA: use #50596d as the text (7.02:1)
  • AA: or shift the background to #242424 (4.54:1)
Aaon black
6.15:1passpassfail
  • AAA: use #8d96aa as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #818ba2 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 #818ba2
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 #818ba2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/818ba2-9ca3c4-df6e4e-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