#64B8EF#64B8EF

#64B8EF is a light, moderate cyan. Relative luminance 0.432; OKLCH L 75.2% C 0.114 H 239.4°. Best body text is #000000 at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#64B8EF
RGB	rgb(100, 184, 239)
HSL	hsl(204, 81%, 66%)
HSV	hsv(204, 58%, 94%)
CMYK	cmyk(58.2%, 23%, 0%, 6.3%)
CIE-LAB	lab(71.70, -9.79, -35.07)
CIE-LCH	lch(71.70, 36.41, 254.41°)
OKLab	oklab(75.16% -0.058 -0.0982)
OKLCH	oklch(75.16% 0.114 239.4)
XYZ	xyz(37.9702, 43.2188, 87.9857)
Luminance	0.4322 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B8EF #EF9B64

analogous

#64EFE1 #64B8EF #6473EF

triadic

#64B8EF #EF64B8 #B8EF64

tetradic

#64B8EF #E164EF #EF9B64 #73EF64

square

#64B8EF #E164EF #EF9B64 #73EF64

split-complementary

#64B8EF #EF6473 #EFE164

monochromatic

#147FC4 #2D9FE9 #64B8EF #9BD1F5 #D3EBFA

Accessibility & contrast

On white

2.18

#64B8EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.64

#64B8EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B8EF

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B8EF	#FFFFFF	#000000	##000000
##64B8EF	1.00	2.18	9.64	9.64
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.64	21.00	1.00	1.00
##000000	9.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB8F2

Deuteranopia (green-blind)

#8CA9EE

Tritanopia (blue-blind)

#00C6CB

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #64b8ef;
/* rgb */ color: rgb(100, 184, 239);
/* oklch */ color: oklch(75.2% 0.114 239.4);

Tailwind

colors: {
  custom: {
    50: '#9bcdf4',
    500: '#64b8ef',
    950: '#000000',
  },
}

SCSS

$custom: #64b8ef;
$custom-light: #9bcdf4;
$custom-dark: #000000;

JSON

{
  "hex": "#64b8ef",
  "rgb": {
    "r": 100,
    "g": 184,
    "b": 239
  },
  "hsl": {
    "h": 203.741,
    "s": 81.287,
    "l": 66.471
  },
  "oklch": {
    "l": 0.75162,
    "c": 0.1141,
    "h": 239.4
  },
  "luminance": 0.43222
}

Semantic roles & 50–950 ramp

primary

#64B8EF

secondary

#EED3C1

accent

#5C08DE

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #64B8EF

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

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