Color

#1664da

#1664da
hex#1664da
rgbrgb(22, 100, 218)
hslhsl(216, 82%, 47%)
oklchoklch(0.531 0.195 259.6)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1435

Colors that go with #1664da

Charcoal, Crimson 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 →

#da8c16

#16c6da · #2916da

#da1664 · #64da16

Split-complementary

Open in tool →

#da2916 · #c6da16

#da16c6 · #da8c16 · #16da29

Contrast

#1664da as textRatioAAAA largeAAAFix
Aaon white
5.43:1passpassfail
  • AAA: use #1253b5 as the text (7.17:1)
Aaon black
3.87:1failpassfail
  • AA: use #2071e9 as the text (4.6:1)
  • AAA: use #5d97ef as the text (7.14:1)
  • AA: or shift the background to #ebebeb (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1664da as the background.

Brands using this color

Fonts for this mood

#1664da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1664da
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 #1664da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1664da-9ca7c4-df5f4e-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