#66CBF6#66CBF6

#66CBF6 is a light, moderate cyan. Relative luminance 0.522; OKLCH L 79.8% C 0.112 H 228.4°. Best body text is #000000 at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#66CBF6
RGB	rgb(102, 203, 246)
HSL	hsl(198, 89%, 68%)
HSV	hsv(198, 59%, 96%)
CMYK	cmyk(58.5%, 17.5%, 0%, 3.5%)
CIE-LAB	lab(77.39, -17.34, -30.06)
CIE-LCH	lch(77.39, 34.70, 240.02°)
OKLab	oklab(79.79% -0.0744 -0.0838)
OKLCH	oklch(79.79% 0.112 228.4)
XYZ	xyz(43.4635, 52.1863, 94.9534)
Luminance	0.5219 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CBF6 #F69166

analogous

#66F6D9 #66CBF6 #6683F6

triadic

#66CBF6 #F666CB #CBF666

tetradic

#66CBF6 #D966F6 #F69166 #83F666

square

#66CBF6 #D966F6 #F69166 #83F666

split-complementary

#66CBF6 #F66683 #F6D966

monochromatic

#0D99D5 #2CB7F3 #66CBF6 #A0DFF9 #DAF2FD

Accessibility & contrast

On white

1.84

#66CBF6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.44

#66CBF6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CBF6

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CBF6	#FFFFFF	#000000	##000000
##66CBF6	1.00	1.84	11.44	11.44
#FFFFFF	1.84	1.00	21.00	21.00
#000000	11.44	21.00	1.00	1.00
##000000	11.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C8F8

Deuteranopia (green-blind)

#A0B9F5

Tritanopia (blue-blind)

#00D7D9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #66cbf6;
/* rgb */ color: rgb(102, 203, 246);
/* oklch */ color: oklch(79.8% 0.112 228.4);

Tailwind

colors: {
  custom: {
    50: '#9ddaf9',
    500: '#66cbf6',
    950: '#000000',
  },
}

SCSS

$custom: #66cbf6;
$custom-light: #9ddaf9;
$custom-dark: #000000;

JSON

{
  "hex": "#66cbf6",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 246
  },
  "hsl": {
    "h": 197.917,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.79792,
    "c": 0.11204,
    "h": 228.4
  },
  "luminance": 0.5219
}

Semantic roles & 50–950 ramp

primary

#66CBF6

secondary

#CF6031

accent

#4500E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CBF6

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

Preview Lab → · Contrast checker → · Palette generator →