#66ADE7#66ADE7

#66ADE7 is a light, moderate cyan. Relative luminance 0.385; OKLCH L 72.4% C 0.111 H 244.8°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#66ADE7
RGB	rgb(102, 173, 231)
HSL	hsl(207, 73%, 65%)
HSV	hsv(207, 56%, 91%)
CMYK	cmyk(55.8%, 25.1%, 0%, 9.4%)
CIE-LAB	lab(68.37, -5.83, -35.88)
CIE-LCH	lch(68.37, 36.35, 260.77°)
OKLab	oklab(72.44% -0.0472 -0.1006)
OKLCH	oklch(72.44% 0.111 244.8)
XYZ	xyz(34.8416, 38.4784, 81.1768)
Luminance	0.3848 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADE7 #E7A066

analogous

#66E7E1 #66ADE7 #666CE7

triadic

#66ADE7 #E766AD #ADE766

tetradic

#66ADE7 #E166E7 #E7A066 #6CE766

square

#66ADE7 #E166E7 #E7A066 #6CE766

split-complementary

#66ADE7 #E7666C #E7E166

monochromatic

#1D71B6 #3191DF #66ADE7 #9BC9EF #D0E6F8

Accessibility & contrast

On white

2.41

#66ADE7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#66ADE7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADE7

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADE7	#FFFFFF	#000000	##000000
##66ADE7	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94AEEA

Deuteranopia (green-blind)

#83A1E6

Tritanopia (blue-blind)

#00BBC1

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66ade7;
/* rgb */ color: rgb(102, 173, 231);
/* oklch */ color: oklch(72.4% 0.111 244.8);

Tailwind

colors: {
  custom: {
    50: '#9ac5ef',
    500: '#66ade7',
    950: '#000000',
  },
}

SCSS

$custom: #66ade7;
$custom-light: #9ac5ef;
$custom-dark: #000000;

JSON

{
  "hex": "#66ade7",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 231
  },
  "hsl": {
    "h": 206.977,
    "s": 72.881,
    "l": 65.294
  },
  "oklch": {
    "l": 0.72443,
    "c": 0.11113,
    "h": 244.8
  },
  "luminance": 0.38481
}

Semantic roles & 50–950 ramp

primary

#66ADE7

secondary

#EAD2BF

accent

#6911D5

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1216

muted

#7F8184

Preview Lab

Preview with #66ADE7

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

Preview Lab → · Contrast checker → · Palette generator →