#66B2ED#66B2ED

#66B2ED is a light, moderate cyan. Relative luminance 0.408; OKLCH L 73.8% C 0.115 H 243.7°. Best body text is #000000 at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#66B2ED
RGB	rgb(102, 178, 237)
HSL	hsl(206, 79%, 66%)
HSV	hsv(206, 57%, 93%)
CMYK	cmyk(57%, 24.9%, 0%, 7.1%)
CIE-LAB	lab(70.02, -6.74, -36.60)
CIE-LCH	lch(70.02, 37.21, 259.56°)
OKLab	oklab(73.83% -0.0508 -0.1026)
OKLCH	oklch(73.83% 0.115 243.7)
XYZ	xyz(36.6803, 40.7767, 86.0420)
Luminance	0.4078 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B2ED #EDA166

analogous

#66EDE4 #66B2ED #666FED

triadic

#66B2ED #ED66B2 #B2ED66

tetradic

#66B2ED #E466ED #EDA166 #6FED66

square

#66B2ED #E466ED #EDA166 #6FED66

split-complementary

#66B2ED #ED666F #EDE466

monochromatic

#1777C2 #2F96E7 #66B2ED #9DCEF3 #D4E9FA

Accessibility & contrast

On white

2.29

#66B2ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.16

#66B2ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2ED

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B2ED	#FFFFFF	#000000	##000000
##66B2ED	1.00	2.29	9.16	9.16
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.16	21.00	1.00	1.00
##000000	9.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B3F0

Deuteranopia (green-blind)

#86A5EC

Tritanopia (blue-blind)

#00C0C6

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66b2ed;
/* rgb */ color: rgb(102, 178, 237);
/* oklch */ color: oklch(73.8% 0.115 243.7);

Tailwind

colors: {
  custom: {
    50: '#9bc8f3',
    500: '#66b2ed',
    950: '#000000',
  },
}

SCSS

$custom: #66b2ed;
$custom-light: #9bc8f3;
$custom-dark: #000000;

JSON

{
  "hex": "#66b2ed",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 237
  },
  "hsl": {
    "h": 206.222,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.73825,
    "c": 0.11451,
    "h": 243.7
  },
  "luminance": 0.4078
}

Semantic roles & 50–950 ramp

primary

#66B2ED

secondary

#EDD5C2

accent

#660ADB

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B2ED

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

Preview Lab → · Contrast checker → · Palette generator →