#66A7EC#66A7EC

#66A7EC is a light, vivid cyan. Relative luminance 0.365; OKLCH L 71.4% C 0.122 H 251.2°. Best body text is #000000 at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#66A7EC
RGB	rgb(102, 167, 236)
HSL	hsl(211, 78%, 66%)
HSV	hsv(211, 57%, 93%)
CMYK	cmyk(56.8%, 29.2%, 0%, 7.5%)
CIE-LAB	lab(66.91, -0.94, -40.90)
CIE-LCH	lch(66.91, 40.91, 268.68°)
OKLab	oklab(71.36% -0.0392 -0.1151)
OKLCH	oklch(71.36% 0.122 251.2)
XYZ	xyz(34.4331, 36.5154, 84.5742)
Luminance	0.3652 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A7EC #ECAB66

analogous

#66EAEC #66A7EC #6866EC

triadic

#66A7EC #EC66A7 #A7EC66

tetradic

#66A7EC #EC66EA #ECAB66 #66EC68

square

#66A7EC #EC66EA #ECAB66 #66EC68

split-complementary

#66A7EC #EC6866 #EAEC66

monochromatic

#1869C0 #3088E5 #66A7EC #9CC6F3 #D3E6FA

Accessibility & contrast

On white

2.53

#66A7EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.30

#66A7EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A7EC

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A7EC	#FFFFFF	#000000	##000000
##66A7EC	1.00	2.53	8.30	8.30
#FFFFFF	2.53	1.00	21.00	21.00
#000000	8.30	21.00	1.00	1.00
##000000	8.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8AAAEF

Deuteranopia (green-blind)

#799DEB

Tritanopia (blue-blind)

#00B7BF

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #66a7ec;
/* rgb */ color: rgb(102, 167, 236);
/* oklch */ color: oklch(71.4% 0.122 251.2);

Tailwind

colors: {
  custom: {
    50: '#9bc0f2',
    500: '#66a7ec',
    950: '#000000',
  },
}

SCSS

$custom: #66a7ec;
$custom-light: #9bc0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#66a7ec",
  "rgb": {
    "r": 102,
    "g": 167,
    "b": 236
  },
  "hsl": {
    "h": 210.896,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.71364,
    "c": 0.12159,
    "h": 251.2
  },
  "luminance": 0.36518
}

Semantic roles & 50–950 ramp

primary

#66A7EC

secondary

#EDD8C1

accent

#760BDA

background

#FAFBFE

surface

#F3F7FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A7EC

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

Preview Lab → · Contrast checker → · Palette generator →