#64B5EB#64B5EB

#64B5EB is a light, moderate cyan. Relative luminance 0.418; OKLCH L 74.3% C 0.112 H 239.8°. Best body text is #000000 at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#64B5EB
RGB	rgb(100, 181, 235)
HSL	hsl(204, 77%, 66%)
HSV	hsv(204, 57%, 92%)
CMYK	cmyk(57.4%, 23%, 0%, 7.8%)
CIE-LAB	lab(70.70, -9.38, -34.46)
CIE-LCH	lch(70.70, 35.71, 254.77°)
OKLab	oklab(74.31% -0.0561 -0.0965)
OKLCH	oklch(74.31% 0.112 239.8)
XYZ	xyz(36.7692, 41.7519, 84.7024)
Luminance	0.4175 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B5EB #EB9A64

analogous

#64EBDD #64B5EB #6471EB

triadic

#64B5EB #EB64B5 #B5EB64

tetradic

#64B5EB #DD64EB #EB9A64 #71EB64

square

#64B5EB #DD64EB #EB9A64 #71EB64

split-complementary

#64B5EB #EB6471 #EBDD64

monochromatic

#187BBC #2E9BE4 #64B5EB #9ACFF2 #D0E9F9

Accessibility & contrast

On white

2.25

#64B5EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.35

#64B5EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B5EB

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B5EB	#FFFFFF	#000000	##000000
##64B5EB	1.00	2.25	9.35	9.35
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.35	21.00	1.00	1.00
##000000	9.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB5EE

Deuteranopia (green-blind)

#8AA7EA

Tritanopia (blue-blind)

#00C3C7

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #64b5eb;
/* rgb */ color: rgb(100, 181, 235);
/* oklch */ color: oklch(74.3% 0.112 239.8);

Tailwind

colors: {
  custom: {
    50: '#9acbf1',
    500: '#64b5eb',
    950: '#000000',
  },
}

SCSS

$custom: #64b5eb;
$custom-light: #9acbf1;
$custom-dark: #000000;

JSON

{
  "hex": "#64b5eb",
  "rgb": {
    "r": 100,
    "g": 181,
    "b": 235
  },
  "hsl": {
    "h": 204,
    "s": 77.143,
    "l": 65.686
  },
  "oklch": {
    "l": 0.74314,
    "c": 0.11162,
    "h": 239.8
  },
  "luminance": 0.41755
}

Semantic roles & 50–950 ramp

primary

#64B5EB

secondary

#ECD1BF

accent

#5E0CD9

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #64B5EB

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

Preview Lab → · Contrast checker → · Palette generator →