#66E5EC#66E5EC

#66E5EC is a very light, moderate teal. Relative luminance 0.649; OKLCH L 85.3% C 0.112 H 200.2°. Best body text is #000000 at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#66E5EC
RGB	rgb(102, 229, 236)
HSL	hsl(183, 78%, 66%)
HSV	hsv(183, 57%, 93%)
CMYK	cmyk(56.8%, 3%, 0%, 7.5%)
CIE-LAB	lab(84.44, -33.02, -14.04)
CIE-LCH	lch(84.44, 35.88, 203.04°)
OKLab	oklab(85.33% -0.1054 -0.0388)
OKLCH	oklch(85.33% 0.112 200.2)
XYZ	xyz(48.6328, 64.9147, 89.3074)
Luminance	0.6492 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E5EC #EC6D66

analogous

#66ECB0 #66E5EC #66A2EC

triadic

#66E5EC #EC66E5 #E5EC66

tetradic

#66E5EC #B066EC #EC6D66 #A2EC66

square

#66E5EC #B066EC #EC6D66 #A2EC66

split-complementary

#66E5EC #EC66A2 #ECB066

monochromatic

#18B7C0 #30DCE5 #66E5EC #9CEEF3 #D3F8FA

Accessibility & contrast

On white

1.50

#66E5EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.98

#66E5EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E5EC

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E5EC	#FFFFFF	#000000	##000000
##66E5EC	1.00	1.50	13.98	13.98
#FFFFFF	1.50	1.00	21.00	21.00
#000000	13.98	21.00	1.00	1.00
##000000	13.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6DCED

Deuteranopia (green-blind)

#C1CCED

Tritanopia (blue-blind)

#00ECE7

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66e5ec;
/* rgb */ color: rgb(102, 229, 236);
/* oklch */ color: oklch(85.3% 0.112 200.2);

Tailwind

colors: {
  custom: {
    50: '#9eedf2',
    500: '#66e5ec',
    950: '#000000',
  },
}

SCSS

$custom: #66e5ec;
$custom-light: #9eedf2;
$custom-dark: #000000;

JSON

{
  "hex": "#66e5ec",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 236
  },
  "hsl": {
    "h": 183.134,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.85334,
    "c": 0.1123,
    "h": 200.2
  },
  "luminance": 0.6492
}

Semantic roles & 50–950 ramp

primary

#66E5EC

secondary

#BE3F38

accent

#160BDA

background

#FCFFFF

surface

#F6FEFE

border

#D0D6D6

text

#101616

muted

#808585

Preview Lab

Preview with #66E5EC

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

Preview Lab → · Contrast checker → · Palette generator →