Color

#64b5fc

#64b5fc
hex#64b5fc
rgbrgb(100, 181, 252)
hslhsl(208, 96%, 69%)
oklchoklch(0.751 0.13 247)
Closest name: Cooler Than Ever (#77bbff)Relative luminance 0.4279

Colors that go with #64b5fc

Charcoal, Dark Orange 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 →

#fcab64

#64fcf7 · #6469fc

#fc64b5 · #b5fc64

Split-complementary

Open in tool →

#fc6469 · #fcf764

#f764fc · #fcab64 · #69fc64

Contrast

#64b5fc as textRatioAAAA largeAAAFix
Aaon white
2.2:1failfailfail
  • AA: use #0475d7 as the text (4.63:1)
  • AAA: use #0357a0 as the text (7.3:1)
  • AA: or shift the background to #424242 (4.57:1)
  • AAA: or shift the background to #242424 (7.06:1)
Aaon black
9.56:1passpasspassPasses 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 #64b5fc as the background.

Brands using this color

Fonts for this mood

#64b5fc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #64b5fc
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 #64b5fc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/64b5fc-9cadc4-df4e51-1f212d-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