#66E9FF#66E9FF

#66E9FF is a very light, moderate teal. Relative luminance 0.683; OKLCH L 86.9% C 0.118 H 210.3°. Best body text is #000000 at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#66E9FF
RGB	rgb(102, 233, 255)
HSL	hsl(189, 100%, 70%)
HSV	hsv(189, 60%, 100%)
CMYK	cmyk(60%, 8.6%, 0%, 0%)
CIE-LAB	lab(86.16, -29.70, -21.45)
CIE-LCH	lch(86.16, 36.64, 215.83°)
OKLab	oklab(86.92% -0.1019 -0.0595)
OKLCH	oklch(86.92% 0.118 210.3)
XYZ	xyz(52.6610, 68.3172, 104.9996)
Luminance	0.6832 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E9FF #FF7C66

analogous

#66FFC8 #66E9FF #669DFF

triadic

#66E9FF #FF66E9 #E9FF66

tetradic

#66E9FF #C866FF #FF7C66 #9DFF66

square

#66E9FF #C866FF #FF7C66 #9DFF66

split-complementary

#66E9FF #FF669D #FFC866

monochromatic

#00C9EB #29E0FF #66E9FF #A3F2FF #E0FBFF

Accessibility & contrast

On white

1.43

#66E9FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.66

#66E9FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E9FF

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E9FF	#FFFFFF	#000000	##000000
##66E9FF	1.00	1.43	14.66	14.66
#FFFFFF	1.43	1.00	21.00	21.00
#000000	14.66	21.00	1.00	1.00
##000000	14.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6E1FF

Deuteranopia (green-blind)

#BFD0FF

Tritanopia (blue-blind)

#00F3F0

Achromatopsia (no color)

#D8D8D8

Design tokens & code

CSS

--color: #66e9ff;
/* rgb */ color: rgb(102, 233, 255);
/* oklch */ color: oklch(86.9% 0.118 210.3);

Tailwind

colors: {
  custom: {
    50: '#a0f0ff',
    500: '#66e9ff',
    950: '#000000',
  },
}

SCSS

$custom: #66e9ff;
$custom-light: #a0f0ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66e9ff",
  "rgb": {
    "r": 102,
    "g": 233,
    "b": 255
  },
  "hsl": {
    "h": 188.627,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.86919,
    "c": 0.11802,
    "h": 210.3
  },
  "luminance": 0.68323
}

Semantic roles & 50–950 ramp

primary

#66E9FF

secondary

#DA482F

accent

#2100E6

background

#FDFFFF

surface

#F7FEFF

border

#D0D6D7

text

#101618

muted

#818586

Preview Lab

Preview with #66E9FF

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

Preview Lab → · Contrast checker → · Palette generator →