#66E9EF#66E9EF

#66E9EF is a very light, moderate teal. Relative luminance 0.673; OKLCH L 86.4% C 0.115 H 199.4°. Best body text is #000000 at 14.47:1 contrast (WCAG AA passes).

Color values

HEX	#66E9EF
RGB	rgb(102, 233, 239)
HSL	hsl(183, 81%, 67%)
HSV	hsv(183, 57%, 94%)
CMYK	cmyk(57.3%, 2.5%, 0%, 6.3%)
CIE-LAB	lab(85.67, -34.09, -13.78)
CIE-LCH	lch(85.67, 36.77, 202.01°)
OKLab	oklab(86.36% -0.1083 -0.0381)
OKLCH	oklch(86.36% 0.115 199.4)
XYZ	xyz(50.1918, 67.3295, 91.9954)
Luminance	0.6734 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E9EF #EF6C66

analogous

#66EFB1 #66E9EF #66A5EF

triadic

#66E9EF #EF66E9 #E9EF66

tetradic

#66E9EF #B166EF #EF6C66 #A5EF66

square

#66E9EF #B166EF #EF6C66 #A5EF66

split-complementary

#66E9EF #EF66A5 #EFB166

monochromatic

#15BEC6 #2FE1E9 #66E9EF #9DF1F5 #D5F9FB

Accessibility & contrast

On white

1.45

#66E9EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.47

#66E9EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E9EF

14.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E9EF	#FFFFFF	#000000	##000000
##66E9EF	1.00	1.45	14.47	14.47
#FFFFFF	1.45	1.00	21.00	21.00
#000000	14.47	21.00	1.00	1.00
##000000	14.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DADFF0

Deuteranopia (green-blind)

#C4CFF0

Tritanopia (blue-blind)

#00F0EA

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #66e9ef;
/* rgb */ color: rgb(102, 233, 239);
/* oklch */ color: oklch(86.4% 0.115 199.4);

Tailwind

colors: {
  custom: {
    50: '#9ef0f4',
    500: '#66e9ef',
    950: '#000000',
  },
}

SCSS

$custom: #66e9ef;
$custom-light: #9ef0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66e9ef",
  "rgb": {
    "r": 102,
    "g": 233,
    "b": 239
  },
  "hsl": {
    "h": 182.628,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.86356,
    "c": 0.11482,
    "h": 199.4
  },
  "luminance": 0.67335
}

Semantic roles & 50–950 ramp

primary

#66E9EF

secondary

#C33C36

accent

#1108DD

background

#FDFFFF

surface

#F7FEFE

border

#D0D6D6

text

#101617

muted

#818585

Preview Lab

Preview with #66E9EF

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

Preview Lab → · Contrast checker → · Palette generator →