#66A3F4#66A3F4

#66A3F4 is a light, vivid cyan. Relative luminance 0.356; OKLCH L 70.9% C 0.135 H 256.0°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#66A3F4
RGB	rgb(102, 163, 244)
HSL	hsl(214, 87%, 68%)
HSV	hsv(214, 58%, 96%)
CMYK	cmyk(58.2%, 33.2%, 0%, 4.3%)
CIE-LAB	lab(66.17, 3.85, -46.43)
CIE-LCH	lch(66.17, 46.59, 274.74°)
OKLab	oklab(70.91% -0.0327 -0.1312)
OKLCH	oklch(70.91% 0.135 256)
XYZ	xyz(34.9000, 35.5478, 90.5926)
Luminance	0.3555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A3F4 #F4B766

analogous

#66EAF4 #66A3F4 #7066F4

triadic

#66A3F4 #F466A3 #A3F466

tetradic

#66A3F4 #F466EA #F4B766 #66F470

square

#66A3F4 #F466EA #F4B766 #66F470

split-complementary

#66A3F4 #F47066 #EAF466

monochromatic

#0F62D1 #2D81F0 #66A3F4 #9FC5F8 #D8E8FC

Accessibility & contrast

On white

2.59

#66A3F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#66A3F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A3F4

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A3F4	#FFFFFF	#000000	##000000
##66A3F4	1.00	2.59	8.11	8.11
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.11	21.00	1.00	1.00
##000000	8.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81A8F7

Deuteranopia (green-blind)

#6F9BF2

Tritanopia (blue-blind)

#00B5C0

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66a3f4;
/* rgb */ color: rgb(102, 163, 244);
/* oklch */ color: oklch(70.9% 0.135 256.0);

Tailwind

colors: {
  custom: {
    50: '#9cbdf8',
    500: '#66a3f4',
    950: '#000000',
  },
}

SCSS

$custom: #66a3f4;
$custom-light: #9cbdf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66a3f4",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 244
  },
  "hsl": {
    "h": 214.225,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.70905,
    "c": 0.13524,
    "h": 256
  },
  "luminance": 0.35551
}

Semantic roles & 50–950 ramp

primary

#66A3F4

secondary

#F1DEC5

accent

#8302E3

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A3F4

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

Preview Lab → · Contrast checker → · Palette generator →