#66ADE6#66ADE6

#66ADE6 is a light, moderate cyan. Relative luminance 0.384; OKLCH L 72.4% C 0.110 H 244.4°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#66ADE6
RGB	rgb(102, 173, 230)
HSL	hsl(207, 72%, 65%)
HSV	hsv(207, 56%, 90%)
CMYK	cmyk(55.7%, 24.8%, 0%, 9.8%)
CIE-LAB	lab(68.33, -6.14, -35.40)
CIE-LCH	lch(68.33, 35.93, 260.17°)
OKLab	oklab(72.4% -0.0476 -0.0992)
OKLCH	oklch(72.4% 0.11 244.4)
XYZ	xyz(34.7008, 38.4221, 80.4351)
Luminance	0.3842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADE6 #E69F66

analogous

#66E6DF #66ADE6 #666DE6

triadic

#66ADE6 #E666AD #ADE666

tetradic

#66ADE6 #DF66E6 #E69F66 #6DE666

square

#66ADE6 #DF66E6 #E69F66 #6DE666

split-complementary

#66ADE6 #E6666D #E6DF66

monochromatic

#1D71B4 #3191DD #66ADE6 #9BC9EF #CFE5F7

Accessibility & contrast

On white

2.42

#66ADE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#66ADE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADE6

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADE6	#FFFFFF	#000000	##000000
##66ADE6	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94AEE9

Deuteranopia (green-blind)

#83A1E5

Tritanopia (blue-blind)

#00BBC0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66ade6;
/* rgb */ color: rgb(102, 173, 230);
/* oklch */ color: oklch(72.4% 0.110 244.4);

Tailwind

colors: {
  custom: {
    50: '#9ac5ee',
    500: '#66ade6',
    950: '#000000',
  },
}

SCSS

$custom: #66ade6;
$custom-light: #9ac5ee;
$custom-dark: #000000;

JSON

{
  "hex": "#66ade6",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 230
  },
  "hsl": {
    "h": 206.719,
    "s": 71.91,
    "l": 65.098
  },
  "oklch": {
    "l": 0.72397,
    "c": 0.11002,
    "h": 244.4
  },
  "luminance": 0.38425
}

Semantic roles & 50–950 ramp

primary

#66ADE6

secondary

#EAD2BE

accent

#6812D4

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1216

muted

#7F8184

Preview Lab

Preview with #66ADE6

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

Preview Lab → · Contrast checker → · Palette generator →