#66ECF4#66ECF4

#66ECF4 is a very light, moderate teal. Relative luminance 0.693; OKLCH L 87.2% C 0.117 H 200.7°. Best body text is #000000 at 14.87:1 contrast (WCAG AA passes).

Color values

HEX	#66ECF4
RGB	rgb(102, 236, 244)
HSL	hsl(183, 87%, 68%)
HSV	hsv(183, 58%, 96%)
CMYK	cmyk(58.2%, 3.3%, 0%, 4.3%)
CIE-LAB	lab(86.67, -34.15, -14.91)
CIE-LCH	lch(86.67, 37.26, 203.58°)
OKLab	oklab(87.22% -0.1093 -0.0412)
OKLCH	oklch(87.22% 0.117 200.7)
XYZ	xyz(51.7972, 69.3420, 96.2250)
Luminance	0.6935 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ECF4 #F46E66

analogous

#66F4B5 #66ECF4 #66A5F4

triadic

#66ECF4 #F466EC #ECF466

tetradic

#66ECF4 #B566F4 #F46E66 #A5F466

square

#66ECF4 #B566F4 #F46E66 #A5F466

split-complementary

#66ECF4 #F466A5 #F4B566

monochromatic

#0FC6D1 #2DE5F0 #66ECF4 #9FF3F8 #D8FAFC

Accessibility & contrast

On white

1.41

#66ECF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.87

#66ECF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ECF4

14.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ECF4	#FFFFFF	#000000	##000000
##66ECF4	1.00	1.41	14.87	14.87
#FFFFFF	1.41	1.00	21.00	21.00
#000000	14.87	21.00	1.00	1.00
##000000	14.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DCE3F5

Deuteranopia (green-blind)

#C6D2F5

Tritanopia (blue-blind)

#00F4EE

Achromatopsia (no color)

#D9D9D9

Design tokens & code

CSS

--color: #66ecf4;
/* rgb */ color: rgb(102, 236, 244);
/* oklch */ color: oklch(87.2% 0.117 200.7);

Tailwind

colors: {
  custom: {
    50: '#9ff2f7',
    500: '#66ecf4',
    950: '#000000',
  },
}

SCSS

$custom: #66ecf4;
$custom-light: #9ff2f7;
$custom-dark: #000000;

JSON

{
  "hex": "#66ecf4",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 244
  },
  "hsl": {
    "h": 183.38,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.87215,
    "c": 0.11687,
    "h": 200.7
  },
  "luminance": 0.69347
}

Semantic roles & 50–950 ramp

primary

#66ECF4

secondary

#CC3B32

accent

#0F02E3

background

#FDFFFF

surface

#F7FEFE

border

#D0D6D6

text

#101717

muted

#818585

Preview Lab

Preview with #66ECF4

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

Preview Lab → · Contrast checker → · Palette generator →