#66A4E8#66A4E8

#66A4E8 is a light, moderate cyan. Relative luminance 0.352; OKLCH L 70.5% C 0.119 H 251.9°. Best body text is #000000 at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#66A4E8
RGB	rgb(102, 164, 232)
HSL	hsl(211, 74%, 65%)
HSV	hsv(211, 56%, 91%)
CMYK	cmyk(56%, 29.3%, 0%, 9%)
CIE-LAB	lab(65.90, -0.49, -40.28)
CIE-LCH	lch(65.90, 40.28, 269.30°)
OKLab	oklab(70.52% -0.0371 -0.1133)
OKLCH	oklch(70.52% 0.119 251.9)
XYZ	xyz(33.3153, 35.1991, 81.3667)
Luminance	0.3520 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4E8 #E8AA66

analogous

#66E5E8 #66A4E8 #6966E8

triadic

#66A4E8 #E866A4 #A4E866

tetradic

#66A4E8 #E866E5 #E8AA66 #66E869

square

#66A4E8 #E866E5 #E8AA66 #66E869

split-complementary

#66A4E8 #E86966 #E5E866

monochromatic

#1C66B8 #3184E0 #66A4E8 #9BC4F0 #D0E3F8

Accessibility & contrast

On white

2.61

#66A4E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.04

#66A4E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4E8

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4E8	#FFFFFF	#000000	##000000
##66A4E8	1.00	2.61	8.04	8.04
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.04	21.00	1.00	1.00
##000000	8.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A7EB

Deuteranopia (green-blind)

#779AE7

Tritanopia (blue-blind)

#00B4BC

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66a4e8;
/* rgb */ color: rgb(102, 164, 232);
/* oklch */ color: oklch(70.5% 0.119 251.9);

Tailwind

colors: {
  custom: {
    50: '#9abeef',
    500: '#66a4e8',
    950: '#000000',
  },
}

SCSS

$custom: #66a4e8;
$custom-light: #9abeef;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4e8",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 232
  },
  "hsl": {
    "h": 211.385,
    "s": 73.864,
    "l": 65.49
  },
  "oklch": {
    "l": 0.70515,
    "c": 0.11925,
    "h": 251.9
  },
  "luminance": 0.35202
}

Semantic roles & 50–950 ramp

primary

#66A4E8

secondary

#EBD6BF

accent

#7710D6

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1216

muted

#7F8184

Preview Lab

Preview with #66A4E8

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

Preview Lab → · Contrast checker → · Palette generator →