#66E9F9#66E9F9

#66E9F9 is a very light, moderate teal. Relative luminance 0.679; OKLCH L 86.7% C 0.116 H 206.3°. Best body text is #000000 at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#66E9F9
RGB	rgb(102, 233, 249)
HSL	hsl(187, 92%, 69%)
HSV	hsv(187, 59%, 98%)
CMYK	cmyk(59%, 6.4%, 0%, 2.4%)
CIE-LAB	lab(85.97, -31.37, -18.58)
CIE-LCH	lch(85.97, 36.46, 210.64°)
OKLab	oklab(86.7% -0.1043 -0.0514)
OKLCH	oklch(86.7% 0.116 206.3)
XYZ	xyz(51.7102, 67.9369, 99.9921)
Luminance	0.6794 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E9F9 #F97666

analogous

#66F9C0 #66E9F9 #66A0F9

triadic

#66E9F9 #F966E9 #E9F966

tetradic

#66E9F9 #C066F9 #F97666 #A0F966

square

#66E9F9 #C066F9 #F97666 #A0F966

split-complementary

#66E9F9 #F966A0 #F9C066

monochromatic

#09C5DC #2BE1F7 #66E9F9 #A1F1FB #DCFAFE

Accessibility & contrast

On white

1.44

#66E9F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.59

#66E9F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E9F9

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E9F9	#FFFFFF	#000000	##000000
##66E9F9	1.00	1.44	14.59	14.59
#FFFFFF	1.44	1.00	21.00	21.00
#000000	14.59	21.00	1.00	1.00
##000000	14.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8E1FA

Deuteranopia (green-blind)

#C1D0F9

Tritanopia (blue-blind)

#00F2EE

Achromatopsia (no color)

#D7D7D7

Design tokens & code

CSS

--color: #66e9f9;
/* rgb */ color: rgb(102, 233, 249);
/* oklch */ color: oklch(86.7% 0.116 206.3);

Tailwind

colors: {
  custom: {
    50: '#9ff0fb',
    500: '#66e9f9',
    950: '#000000',
  },
}

SCSS

$custom: #66e9f9;
$custom-light: #9ff0fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66e9f9",
  "rgb": {
    "r": 102,
    "g": 233,
    "b": 249
  },
  "hsl": {
    "h": 186.531,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.86703,
    "c": 0.11629,
    "h": 206.3
  },
  "luminance": 0.67942
}

Semantic roles & 50–950 ramp

primary

#66E9F9

secondary

#D34230

accent

#1900E6

background

#FDFFFF

surface

#F7FEFF

border

#D0D6D7

text

#101617

muted

#818585

Preview Lab

Preview with #66E9F9

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

Preview Lab → · Contrast checker → · Palette generator →