#66ADF3#66ADF3

#66ADF3 is a light, vivid cyan. Relative luminance 0.392; OKLCH L 73.0% C 0.125 H 249.6°. Best body text is #000000 at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#66ADF3
RGB	rgb(102, 173, 243)
HSL	hsl(210, 85%, 68%)
HSV	hsv(210, 58%, 95%)
CMYK	cmyk(58%, 28.8%, 0%, 4.7%)
CIE-LAB	lab(68.88, -2.12, -41.64)
CIE-LCH	lch(68.88, 41.69, 267.08°)
OKLab	oklab(73.01% -0.0436 -0.1172)
OKLCH	oklch(73.01% 0.125 249.6)
XYZ	xyz(36.5949, 39.1797, 90.4106)
Luminance	0.3918 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADF3 #F3AC66

analogous

#66F3F2 #66ADF3 #6666F3

triadic

#66ADF3 #F366AD #ADF366

tetradic

#66ADF3 #F266F3 #F3AC66 #66F366

square

#66ADF3 #F266F3 #F3AC66 #66F366

split-complementary

#66ADF3 #F36666 #F3F266

monochromatic

#1070CE #2D8FEF #66ADF3 #9FCBF7 #D7EAFC

Accessibility & contrast

On white

2.38

#66ADF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.84

#66ADF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADF3

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADF3	#FFFFFF	#000000	##000000
##66ADF3	1.00	2.38	8.84	8.84
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.84	21.00	1.00	1.00
##000000	8.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FB0F6

Deuteranopia (green-blind)

#7DA2F2

Tritanopia (blue-blind)

#00BDC6

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66adf3;
/* rgb */ color: rgb(102, 173, 243);
/* oklch */ color: oklch(73.0% 0.125 249.6);

Tailwind

colors: {
  custom: {
    50: '#9cc5f7',
    500: '#66adf3',
    950: '#000000',
  },
}

SCSS

$custom: #66adf3;
$custom-light: #9cc5f7;
$custom-dark: #000000;

JSON

{
  "hex": "#66adf3",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 243
  },
  "hsl": {
    "h": 209.787,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.73012,
    "c": 0.12506,
    "h": 249.6
  },
  "luminance": 0.39183
}

Semantic roles & 50–950 ramp

primary

#66ADF3

secondary

#F0DAC5

accent

#7204E2

background

#FAFCFF

surface

#F4F8FE

border

#CED1D6

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ADF3

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

Preview Lab → · Contrast checker → · Palette generator →