Color

#64afe8

#64afe8
hex#64afe8
rgbrgb(100, 175, 232)
hslhsl(206, 74%, 65%)
oklchoklch(0.728 0.112 243.1)
Closest name: Cerulean (#55aaee)Relative luminance 0.392

Colors that go with #64afe8

Charcoal, Peru 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 →

#e89d64

#64e8df · #646de8

#e864af · #afe864

Split-complementary

Open in tool →

#e8646d · #e8df64

#df64e8 · #e89d64 · #6de864

Contrast

#64afe8 as textRatioAAAA largeAAAFix
Aaon white
2.38:1failfailfail
  • AA: use #1d78bf as the text (4.68:1)
  • AAA: use #165c92 as the text (7.05:1)
  • AA: or shift the background to #3d3d3d (4.57:1)
  • AAA: or shift the background to #1c1c1c (7.17:1)
Aaon black
8.84:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #64afe8 as the background.

Brands using this color

Fonts for this mood

#64afe8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #64afe8
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 #64afe8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/64afe8-9caec4-df4e56-1f212d-e9f1f1?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