#66E4EF#66E4EF

#66E4EF is a very light, moderate teal. Relative luminance 0.645; OKLCH L 85.2% C 0.112 H 203.1°. Best body text is #000000 at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#66E4EF
RGB	rgb(102, 228, 239)
HSL	hsl(185, 81%, 67%)
HSV	hsv(185, 57%, 94%)
CMYK	cmyk(57.3%, 4.6%, 0%, 6.3%)
CIE-LAB	lab(84.25, -31.73, -15.92)
CIE-LCH	lch(84.25, 35.50, 206.64°)
OKLab	oklab(85.21% -0.1031 -0.044)
OKLCH	oklch(85.21% 0.112 203.1)
XYZ	xyz(48.7964, 64.5387, 91.5303)
Luminance	0.6454 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E4EF #EF7166

analogous

#66EFB6 #66E4EF #669FEF

triadic

#66E4EF #EF66E4 #E4EF66

tetradic

#66E4EF #B666EF #EF7166 #9FEF66

square

#66E4EF #B666EF #EF7166 #9FEF66

split-complementary

#66E4EF #EF669F #EFB666

monochromatic

#15B8C6 #2FDAE9 #66E4EF #9DEEF5 #D5F8FB

Accessibility & contrast

On white

1.51

#66E4EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.91

#66E4EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E4EF

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E4EF	#FFFFFF	#000000	##000000
##66E4EF	1.00	1.51	13.91	13.91
#FFFFFF	1.51	1.00	21.00	21.00
#000000	13.91	21.00	1.00	1.00
##000000	13.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4DBF0

Deuteranopia (green-blind)

#BFCBF0

Tritanopia (blue-blind)

#00ECE7

Achromatopsia (no color)

#D2D2D2

Design tokens & code

CSS

--color: #66e4ef;
/* rgb */ color: rgb(102, 228, 239);
/* oklch */ color: oklch(85.2% 0.112 203.1);

Tailwind

colors: {
  custom: {
    50: '#9eedf4',
    500: '#66e4ef',
    950: '#000000',
  },
}

SCSS

$custom: #66e4ef;
$custom-light: #9eedf4;
$custom-dark: #000000;

JSON

{
  "hex": "#66e4ef",
  "rgb": {
    "r": 102,
    "g": 228,
    "b": 239
  },
  "hsl": {
    "h": 184.818,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.85208,
    "c": 0.11214,
    "h": 203.1
  },
  "luminance": 0.64544
}

Semantic roles & 50–950 ramp

primary

#66E4EF

secondary

#C34136

accent

#1908DD

background

#FCFFFF

surface

#F6FEFE

border

#D0D6D6

text

#101617

muted

#808585

Preview Lab

Preview with #66E4EF

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

Preview Lab → · Contrast checker → · Palette generator →