#42D1EA#42D1EA

#42D1EA is a light, vivid teal. Relative luminance 0.527; OKLCH L 79.6% C 0.123 H 211.9°. Best body text is #000000 at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#42D1EA
RGB	rgb(66, 209, 234)
HSL	hsl(189, 80%, 59%)
HSV	hsv(189, 72%, 92%)
CMYK	cmyk(71.8%, 10.7%, 0%, 8.2%)
CIE-LAB	lab(77.69, -29.50, -23.26)
CIE-LCH	lch(77.69, 37.56, 218.25°)
OKLab	oklab(79.61% -0.104 -0.0647)
OKLCH	oklch(79.61% 0.123 211.9)
XYZ	xyz(39.8922, 52.6950, 85.8946)
Luminance	0.5270 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42D1EA #EA5B42

analogous

#42EAAF #42D1EA #427DEA

triadic

#42D1EA #EA42D1 #D1EA42

tetradic

#42D1EA #AF42EA #EA5B42 #7DEA42

square

#42D1EA #AF42EA #EA5B42 #7DEA42

split-complementary

#42D1EA #EA427D #EAAF42

monochromatic

#128BA0 #18BAD7 #42D1EA #79DEF0 #B0ECF6

Accessibility & contrast

On white

1.82

#42D1EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.54

#42D1EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42D1EA

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42D1EA	#FFFFFF	#000000	##000000
##42D1EA	1.00	1.82	11.54	11.54
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.54	21.00	1.00	1.00
##000000	11.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDCAEB

Deuteranopia (green-blind)

#A6B9EA

Tritanopia (blue-blind)

#00DBD9

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #42d1ea;
/* rgb */ color: rgb(66, 209, 234);
/* oklch */ color: oklch(79.6% 0.123 211.9);

Tailwind

colors: {
  custom: {
    50: '#8ddff0',
    500: '#42d1ea',
    950: '#000000',
  },
}

SCSS

$custom: #42d1ea;
$custom-light: #8ddff0;
$custom-dark: #000000;

JSON

{
  "hex": "#42d1ea",
  "rgb": {
    "r": 66,
    "g": 209,
    "b": 234
  },
  "hsl": {
    "h": 188.929,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.79614,
    "c": 0.12255,
    "h": 211.9
  },
  "luminance": 0.527
}

Semantic roles & 50–950 ramp

primary

#42D1EA

secondary

#A23F2E

accent

#4F31F6

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #42D1EA

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

Preview Lab → · Contrast checker → · Palette generator →