#66A4E7#66A4E7

#66A4E7 is a light, moderate cyan. Relative luminance 0.351; OKLCH L 70.5% C 0.118 H 251.5°. Best body text is #000000 at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#66A4E7
RGB	rgb(102, 164, 231)
HSL	hsl(211, 73%, 65%)
HSV	hsv(211, 56%, 91%)
CMYK	cmyk(55.8%, 29%, 0%, 9.4%)
CIE-LAB	lab(65.86, -0.81, -39.80)
CIE-LCH	lch(65.86, 39.81, 268.84°)
OKLab	oklab(70.47% -0.0374 -0.1119)
OKLCH	oklch(70.47% 0.118 251.5)
XYZ	xyz(33.1736, 35.1424, 80.6208)
Luminance	0.3514 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4E7 #E7A966

analogous

#66E4E7 #66A4E7 #6966E7

triadic

#66A4E7 #E766A4 #A4E766

tetradic

#66A4E7 #E766E4 #E7A966 #66E769

square

#66A4E7 #E766E4 #E7A966 #66E769

split-complementary

#66A4E7 #E76966 #E4E766

monochromatic

#1D66B6 #3185DF #66A4E7 #9BC3EF #D0E3F8

Accessibility & contrast

On white

2.62

#66A4E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.03

#66A4E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4E7

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4E7	#FFFFFF	#000000	##000000
##66A4E7	1.00	2.62	8.03	8.03
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.03	21.00	1.00	1.00
##000000	8.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A7EA

Deuteranopia (green-blind)

#779AE6

Tritanopia (blue-blind)

#00B3BC

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66a4e7;
/* rgb */ color: rgb(102, 164, 231);
/* oklch */ color: oklch(70.5% 0.118 251.5);

Tailwind

colors: {
  custom: {
    50: '#9abeef',
    500: '#66a4e7',
    950: '#000000',
  },
}

SCSS

$custom: #66a4e7;
$custom-light: #9abeef;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4e7",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 231
  },
  "hsl": {
    "h": 211.163,
    "s": 72.881,
    "l": 65.294
  },
  "oklch": {
    "l": 0.70466,
    "c": 0.11803,
    "h": 251.5
  },
  "luminance": 0.35145
}

Semantic roles & 50–950 ramp

primary

#66A4E7

secondary

#EAD5BF

accent

#7711D5

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1216

muted

#7F8184

Preview Lab

Preview with #66A4E7

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

Preview Lab → · Contrast checker → · Palette generator →