#66A4F4#66A4F4

#66A4F4 is a light, vivid cyan. Relative luminance 0.359; OKLCH L 71.1% C 0.134 H 255.4°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#66A4F4
RGB	rgb(102, 164, 244)
HSL	hsl(214, 87%, 68%)
HSV	hsv(214, 58%, 96%)
CMYK	cmyk(58.2%, 32.8%, 0%, 4.3%)
CIE-LAB	lab(66.45, 3.28, -46.00)
CIE-LCH	lch(66.45, 46.12, 274.07°)
OKLab	oklab(71.12% -0.0338 -0.1299)
OKLCH	oklch(71.12% 0.134 255.4)
XYZ	xyz(35.0783, 35.9043, 90.6521)
Luminance	0.3591 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4F4 #F4B666

analogous

#66EBF4 #66A4F4 #6F66F4

triadic

#66A4F4 #F466A4 #A4F466

tetradic

#66A4F4 #F466EB #F4B666 #66F46F

square

#66A4F4 #F466EB #F4B666 #66F46F

split-complementary

#66A4F4 #F46F66 #EBF466

monochromatic

#0F64D1 #2D82F0 #66A4F4 #9FC6F8 #D8E8FC

Accessibility & contrast

On white

2.57

#66A4F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#66A4F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4F4

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4F4	#FFFFFF	#000000	##000000
##66A4F4	1.00	2.57	8.18	8.18
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.18	21.00	1.00	1.00
##000000	8.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#83A9F7

Deuteranopia (green-blind)

#709BF2

Tritanopia (blue-blind)

#00B6C1

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a4f4;
/* rgb */ color: rgb(102, 164, 244);
/* oklch */ color: oklch(71.1% 0.134 255.4);

Tailwind

colors: {
  custom: {
    50: '#9cbef8',
    500: '#66a4f4',
    950: '#000000',
  },
}

SCSS

$custom: #66a4f4;
$custom-light: #9cbef8;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4f4",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 244
  },
  "hsl": {
    "h": 213.803,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.71119,
    "c": 0.13427,
    "h": 255.4
  },
  "luminance": 0.35907
}

Semantic roles & 50–950 ramp

primary

#66A4F4

secondary

#F1DEC5

accent

#8102E3

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A4F4

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

Preview Lab → · Contrast checker → · Palette generator →