#66E4F9#66E4F9

#66E4F9 is a very light, moderate teal. Relative luminance 0.652; OKLCH L 85.6% C 0.115 H 210.1°. Best body text is #000000 at 14.03:1 contrast (WCAG AA passes).

Color values

HEX	#66E4F9
RGB	rgb(102, 228, 249)
HSL	hsl(189, 92%, 69%)
HSV	hsv(189, 59%, 98%)
CMYK	cmyk(59%, 8.4%, 0%, 2.4%)
CIE-LAB	lab(84.56, -28.97, -20.72)
CIE-LCH	lch(84.56, 35.62, 215.57°)
OKLab	oklab(85.56% -0.0992 -0.0574)
OKLCH	oklch(85.56% 0.115 210.1)
XYZ	xyz(50.3147, 65.1460, 99.5270)
Luminance	0.6515 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E4F9 #F97B66

analogous

#66F9C4 #66E4F9 #669BF9

triadic

#66E4F9 #F966E4 #E4F966

tetradic

#66E4F9 #C466F9 #F97B66 #9BF966

square

#66E4F9 #C466F9 #F97B66 #9BF966

split-complementary

#66E4F9 #F9669B #F9C466

monochromatic

#09BEDC #2BDAF7 #66E4F9 #A1EEFB #DCF9FE

Accessibility & contrast

On white

1.50

#66E4F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.03

#66E4F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E4F9

14.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E4F9	#FFFFFF	#000000	##000000
##66E4F9	1.00	1.50	14.03	14.03
#FFFFFF	1.50	1.00	21.00	21.00
#000000	14.03	21.00	1.00	1.00
##000000	14.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D2DCFA

Deuteranopia (green-blind)

#BCCCF9

Tritanopia (blue-blind)

#00EEEA

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66e4f9;
/* rgb */ color: rgb(102, 228, 249);
/* oklch */ color: oklch(85.6% 0.115 210.1);

Tailwind

colors: {
  custom: {
    50: '#9fecfb',
    500: '#66e4f9',
    950: '#000000',
  },
}

SCSS

$custom: #66e4f9;
$custom-light: #9fecfb;
$custom-dark: #000000;

JSON

{
  "hex": "#66e4f9",
  "rgb": {
    "r": 102,
    "g": 228,
    "b": 249
  },
  "hsl": {
    "h": 188.571,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.85564,
    "c": 0.1146,
    "h": 210.1
  },
  "luminance": 0.65151
}

Semantic roles & 50–950 ramp

primary

#66E4F9

secondary

#D34830

accent

#2100E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66E4F9

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

Preview Lab → · Contrast checker → · Palette generator →