#66ADE8#66ADE8

#66ADE8 is a light, moderate cyan. Relative luminance 0.385; OKLCH L 72.5% C 0.112 H 245.3°. Best body text is #000000 at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#66ADE8
RGB	rgb(102, 173, 232)
HSL	hsl(207, 74%, 65%)
HSV	hsv(207, 56%, 91%)
CMYK	cmyk(56%, 25.4%, 0%, 9%)
CIE-LAB	lab(68.41, -5.52, -36.37)
CIE-LCH	lch(68.41, 36.78, 261.36°)
OKLab	oklab(72.49% -0.0469 -0.102)
OKLCH	oklch(72.49% 0.112 245.3)
XYZ	xyz(34.9833, 38.5351, 81.9227)
Luminance	0.3854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADE8 #E8A166

analogous

#66E8E2 #66ADE8 #666CE8

triadic

#66ADE8 #E866AD #ADE866

tetradic

#66ADE8 #E266E8 #E8A166 #6CE866

square

#66ADE8 #E266E8 #E8A166 #6CE866

split-complementary

#66ADE8 #E8666C #E8E266

monochromatic

#1C71B8 #3190E0 #66ADE8 #9BCAF0 #D0E6F8

Accessibility & contrast

On white

2.41

#66ADE8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.71

#66ADE8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADE8

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADE8	#FFFFFF	#000000	##000000
##66ADE8	1.00	2.41	8.71	8.71
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.71	21.00	1.00	1.00
##000000	8.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94AEEB

Deuteranopia (green-blind)

#82A1E7

Tritanopia (blue-blind)

#00BBC1

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66ade8;
/* rgb */ color: rgb(102, 173, 232);
/* oklch */ color: oklch(72.5% 0.112 245.3);

Tailwind

colors: {
  custom: {
    50: '#9bc5ef',
    500: '#66ade8',
    950: '#000000',
  },
}

SCSS

$custom: #66ade8;
$custom-light: #9bc5ef;
$custom-dark: #000000;

JSON

{
  "hex": "#66ade8",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 232
  },
  "hsl": {
    "h": 207.231,
    "s": 73.864,
    "l": 65.49
  },
  "oklch": {
    "l": 0.72489,
    "c": 0.11226,
    "h": 245.3
  },
  "luminance": 0.38538
}

Semantic roles & 50–950 ramp

primary

#66ADE8

secondary

#EBD3BF

accent

#6A10D6

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1216

muted

#7F8184

Preview Lab

Preview with #66ADE8

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

Preview Lab → · Contrast checker → · Palette generator →