#64B5EC#64B5EC

#64B5EC is a light, moderate cyan. Relative luminance 0.418; OKLCH L 74.4% C 0.113 H 240.3°. Best body text is #000000 at 9.36:1 contrast (WCAG AA passes).

Color values

HEX#64B5EC
RGBrgb(100, 181, 236)
HSLhsl(204, 78%, 66%)
HSVhsv(204, 58%, 93%)
CMYKcmyk(57.6%, 23.3%, 0%, 7.5%)
CIE-LABlab(70.74, -9.08, -34.94)
CIE-LCHlch(70.74, 36.10, 255.44°)
OKLaboklab(74.36% -0.0558 -0.0979)
OKLCHoklch(74.36% 0.113 240.3)
XYZxyz(36.9141, 41.8098, 85.4654)
Luminance0.4181 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#64B5EC #EC9B64
analogous
#64ECDF #64B5EC #6471EC
triadic
#64B5EC #EC64B5 #B5EC64
tetradic
#64B5EC #DF64EC #EC9B64 #71EC64
square
#64B5EC #DF64EC #EC9B64 #71EC64
split-complementary
#64B5EC #EC6471 #ECDF64
monochromatic
#177BBE #2D9BE5 #64B5EC #9BCFF3 #D1E9F9

Accessibility & contrast

On white

2.24
#64B5EC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.36
#64B5EC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B5EC
9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##64B5EC#FFFFFF#000000##000000
##64B5EC1.002.249.369.36
#FFFFFF2.241.0021.0021.00
#0000009.3621.001.001.00
##0000009.3621.001.001.00

Color blindness preview

Protanopia (red-blind)
#9CB5EF
Deuteranopia (green-blind)
#8AA7EB
Tritanopia (blue-blind)
#00C3C8
Achromatopsia (no color)
#ADADAD

Design tokens & code

CSS
--color: #64b5ec;
/* rgb */ color: rgb(100, 181, 236);
/* oklch */ color: oklch(74.4% 0.113 240.3);
Tailwind
colors: {
  custom: {
    50: '#9acbf2',
    500: '#64b5ec',
    950: '#000000',
  },
}
SCSS
$custom: #64b5ec;
$custom-light: #9acbf2;
$custom-dark: #000000;
JSON
{
  "hex": "#64b5ec",
  "rgb": {
    "r": 100,
    "g": 181,
    "b": 236
  },
  "hsl": {
    "h": 204.265,
    "s": 78.161,
    "l": 65.882
  },
  "oklch": {
    "l": 0.74359,
    "c": 0.11266,
    "h": 240.3
  },
  "luminance": 0.41813
}

Semantic roles & 50–950 ramp

primary
#64B5EC
secondary
#ECD2BF
accent
#5F0BDA
background
#FAFCFE
surface
#F3F8FD
border
#CDD1D5
text
#0F1317
muted
#7F8285

Preview Lab

Preview with #64B5EC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#64B5EC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva