Color

#818ee4

#818ee4
hex#818ee4
rgbrgb(129, 142, 228)
hslhsl(232, 65%, 70%)
oklchoklch(0.673 0.128 275.9)
Closest name: Perrywinkle (#8f8ce7)Relative luminance 0.2961

Colors that go with #818ee4

Charcoal, Medium Sea Green and Amber 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 →

#e4d781

#81c0e4 · #a581e4

#e4818e · #8ee481

Split-complementary

Open in tool →

#e4a581 · #c0e481

#e481c0 · #e4d781 · #81e4a5

Contrast

#818ee4 as textRatioAAAA largeAAAFix
Aaon white
3.03:1failpassfail
  • AA: use #5b6cdc as the text (4.54:1)
  • AAA: use #3146d3 as the text (7.13:1)
  • AA: or shift the background to #2b2b2b (4.67:1)
Aaon black
6.92:1passpassfail
  • AAA: use #8592e5 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #818ee4 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

#818ee4 reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #818ee4
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 #818ee4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/818ee4-9c9dc4-df864e-231f2d-e9eef1?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