#64B4DF#64B4DF

#64B4DF is a light, moderate cyan. Relative luminance 0.407; OKLCH L 73.6% C 0.100 H 233.9°. Best body text is #000000 at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#64B4DF
RGB	rgb(100, 180, 223)
HSL	hsl(201, 66%, 63%)
HSV	hsv(201, 55%, 87%)
CMYK	cmyk(55.2%, 19.3%, 0%, 12.5%)
CIE-LAB	lab(69.95, -12.46, -29.08)
CIE-LCH	lch(69.95, 31.63, 246.81°)
OKLab	oklab(73.56% -0.0591 -0.0811)
OKLCH	oklch(73.56% 0.1 233.9)
XYZ	xyz(34.8911, 40.6765, 75.8104)
Luminance	0.4068 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B4DF #DF8F64

analogous

#64DFCD #64B4DF #6476DF

triadic

#64B4DF #DF64B4 #B4DF64

tetradic

#64B4DF #CD64DF #DF8F64 #76DF64

square

#64B4DF #CD64DF #DF8F64 #76DF64

split-complementary

#64B4DF #DF6476 #DFCD64

monochromatic

#2278A6 #319BD5 #64B4DF #97CDE9 #C9E5F4

Accessibility & contrast

On white

2.30

#64B4DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.14

#64B4DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B4DF

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B4DF	#FFFFFF	#000000	##000000
##64B4DF	1.00	2.30	9.14	9.14
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.14	21.00	1.00	1.00
##000000	9.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB2E1

Deuteranopia (green-blind)

#8EA5DE

Tritanopia (blue-blind)

#00BFC2

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #64b4df;
/* rgb */ color: rgb(100, 180, 223);
/* oklch */ color: oklch(73.6% 0.100 233.9);

Tailwind

colors: {
  custom: {
    50: '#99cae9',
    500: '#64b4df',
    950: '#000000',
  },
}

SCSS

$custom: #64b4df;
$custom-light: #99cae9;
$custom-dark: #000000;

JSON

{
  "hex": "#64b4df",
  "rgb": {
    "r": 100,
    "g": 180,
    "b": 223
  },
  "hsl": {
    "h": 200.976,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.73564,
    "c": 0.10034,
    "h": 233.9
  },
  "luminance": 0.4068
}

Semantic roles & 50–950 ramp

primary

#64B4DF

secondary

#E5C9B9

accent

#5718CE

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #64B4DF

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

Preview Lab → · Contrast checker → · Palette generator →