#66A4E6#66A4E6

#66A4E6 is a light, moderate cyan. Relative luminance 0.351; OKLCH L 70.4% C 0.117 H 251.2°. Best body text is #000000 at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#66A4E6
RGB	rgb(102, 164, 230)
HSL	hsl(211, 72%, 65%)
HSV	hsv(211, 56%, 90%)
CMYK	cmyk(55.7%, 28.7%, 0%, 9.8%)
CIE-LAB	lab(65.82, -1.12, -39.32)
CIE-LCH	lch(65.82, 39.33, 268.37°)
OKLab	oklab(70.42% -0.0377 -0.1105)
OKLCH	oklch(70.42% 0.117 251.2)
XYZ	xyz(33.0328, 35.0861, 79.8791)
Luminance	0.3509 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4E6 #E6A866

analogous

#66E4E6 #66A4E6 #6866E6

triadic

#66A4E6 #E666A4 #A4E666

tetradic

#66A4E6 #E666E4 #E6A866 #66E668

square

#66A4E6 #E666E4 #E6A866 #66E668

split-complementary

#66A4E6 #E66866 #E4E666

monochromatic

#1D66B4 #3185DD #66A4E6 #9BC3EF #CFE3F7

Accessibility & contrast

On white

2.62

#66A4E6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.02

#66A4E6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4E6

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4E6	#FFFFFF	#000000	##000000
##66A4E6	1.00	2.62	8.02	8.02
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.02	21.00	1.00	1.00
##000000	8.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89A7E9

Deuteranopia (green-blind)

#789AE5

Tritanopia (blue-blind)

#00B3BB

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66a4e6;
/* rgb */ color: rgb(102, 164, 230);
/* oklch */ color: oklch(70.4% 0.117 251.2);

Tailwind

colors: {
  custom: {
    50: '#9abeee',
    500: '#66a4e6',
    950: '#000000',
  },
}

SCSS

$custom: #66a4e6;
$custom-light: #9abeee;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4e6",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 230
  },
  "hsl": {
    "h": 210.938,
    "s": 71.91,
    "l": 65.098
  },
  "oklch": {
    "l": 0.70417,
    "c": 0.11679,
    "h": 251.2
  },
  "luminance": 0.35089
}

Semantic roles & 50–950 ramp

primary

#66A4E6

secondary

#EAD5BE

accent

#7612D4

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1216

muted

#7F8184

Preview Lab

Preview with #66A4E6

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

Preview Lab → · Contrast checker → · Palette generator →