#66B6EA#66B6EA

#66B6EA is a light, moderate cyan. Relative luminance 0.422; OKLCH L 74.6% C 0.109 H 239.0°. Best body text is #000000 at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#66B6EA
RGB	rgb(102, 182, 234)
HSL	hsl(204, 76%, 66%)
HSV	hsv(204, 56%, 92%)
CMYK	cmyk(56.4%, 22.2%, 0%, 8.2%)
CIE-LAB	lab(71.02, -9.83, -33.41)
CIE-LCH	lch(71.02, 34.83, 253.60°)
OKLab	oklab(74.58% -0.0561 -0.0934)
OKLCH	oklch(74.58% 0.109 239)
XYZ	xyz(37.0532, 42.2179, 84.0222)
Luminance	0.4222 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B6EA #EA9A66

analogous

#66EADC #66B6EA #6674EA

triadic

#66B6EA #EA66B6 #B6EA66

tetradic

#66B6EA #DC66EA #EA9A66 #74EA66

square

#66B6EA #DC66EA #EA9A66 #74EA66

split-complementary

#66B6EA #EA6674 #EADC66

monochromatic

#1A7CBC #309CE3 #66B6EA #9CD0F1 #D2E9F9

Accessibility & contrast

On white

2.22

#66B6EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.44

#66B6EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B6EA

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B6EA	#FFFFFF	#000000	##000000
##66B6EA	1.00	2.22	9.44	9.44
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.44	21.00	1.00	1.00
##000000	9.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB5EC

Deuteranopia (green-blind)

#8CA8E9

Tritanopia (blue-blind)

#00C3C7

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66b6ea;
/* rgb */ color: rgb(102, 182, 234);
/* oklch */ color: oklch(74.6% 0.109 239.0);

Tailwind

colors: {
  custom: {
    50: '#9bcbf1',
    500: '#66b6ea',
    950: '#000000',
  },
}

SCSS

$custom: #66b6ea;
$custom-light: #9bcbf1;
$custom-dark: #000000;

JSON

{
  "hex": "#66b6ea",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 234
  },
  "hsl": {
    "h": 203.636,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.74578,
    "c": 0.10899,
    "h": 239
  },
  "luminance": 0.42221
}

Semantic roles & 50–950 ramp

primary

#66B6EA

secondary

#ECD1C0

accent

#5D0DD8

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #66B6EA

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

Preview Lab → · Contrast checker → · Palette generator →