#66A6FD#66A6FD

#66A6FD is a light, vivid cyan. Relative luminance 0.372; OKLCH L 72.0% C 0.144 H 256.5°. Best body text is #000000 at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#66A6FD
RGB	rgb(102, 166, 253)
HSL	hsl(215, 97%, 70%)
HSV	hsv(215, 60%, 99%)
CMYK	cmyk(59.7%, 34.4%, 0%, 0.8%)
CIE-LAB	lab(67.42, 5.00, -49.38)
CIE-LCH	lch(67.42, 49.63, 275.78°)
OKLab	oklab(72.01% -0.0336 -0.1398)
OKLCH	oklch(72.01% 0.144 256.5)
XYZ	xyz(36.8390, 37.1858, 98.1457)
Luminance	0.3719 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A6FD #FDBD66

analogous

#66F1FD #66A6FD #7266FD

triadic

#66A6FD #FD66A6 #A6FD66

tetradic

#66A6FD #FD66F1 #FDBD66 #66FD72

square

#66A6FD #FD66F1 #FDBD66 #66FD72

split-complementary

#66A6FD #FD7266 #F1FD66

monochromatic

#0363E6 #2A83FC #66A6FD #A2C9FE #DFECFF

Accessibility & contrast

On white

2.49

#66A6FD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.44

#66A6FD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A6FD

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A6FD	#FFFFFF	#000000	##000000
##66A6FD	1.00	2.49	8.44	8.44
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.44	21.00	1.00	1.00
##000000	8.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81ACFF

Deuteranopia (green-blind)

#6D9EFB

Tritanopia (blue-blind)

#00BAC6

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66a6fd;
/* rgb */ color: rgb(102, 166, 253);
/* oklch */ color: oklch(72.0% 0.144 256.5);

Tailwind

colors: {
  custom: {
    50: '#9dc0fe',
    500: '#66a6fd',
    950: '#000000',
  },
}

SCSS

$custom: #66a6fd;
$custom-light: #9dc0fe;
$custom-dark: #000000;

JSON

{
  "hex": "#66a6fd",
  "rgb": {
    "r": 102,
    "g": 166,
    "b": 253
  },
  "hsl": {
    "h": 214.57,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.72014,
    "c": 0.14376,
    "h": 256.5
  },
  "luminance": 0.37189
}

Semantic roles & 50–950 ramp

primary

#66A6FD

secondary

#F5E3CA

accent

#8400E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #66A6FD

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

Preview Lab → · Contrast checker → · Palette generator →