#42D3EA#42D3EA

#42D3EA is a light, vivid teal. Relative luminance 0.537; OKLCH L 80.1% C 0.123 H 210.4°. Best body text is #000000 at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#42D3EA
RGB	rgb(66, 211, 234)
HSL	hsl(188, 80%, 59%)
HSV	hsv(188, 72%, 92%)
CMYK	cmyk(71.8%, 9.8%, 0%, 8.2%)
CIE-LAB	lab(78.28, -30.47, -22.37)
CIE-LCH	lch(78.28, 37.80, 216.29°)
OKLab	oklab(80.08% -0.106 -0.0622)
OKLCH	oklch(80.08% 0.123 210.4)
XYZ	xyz(40.3859, 53.6825, 86.0592)
Luminance	0.5369 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42D3EA #EA5942

analogous

#42EAAD #42D3EA #427FEA

triadic

#42D3EA #EA42D3 #D3EA42

tetradic

#42D3EA #AD42EA #EA5942 #7FEA42

square

#42D3EA #AD42EA #EA5942 #7FEA42

split-complementary

#42D3EA #EA427F #EAAD42

monochromatic

#128CA0 #18BDD7 #42D3EA #79E0F0 #B0EDF6

Accessibility & contrast

On white

1.79

#42D3EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.74

#42D3EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42D3EA

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42D3EA	#FFFFFF	#000000	##000000
##42D3EA	1.00	1.79	11.74	11.74
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.74	21.00	1.00	1.00
##000000	11.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0CBEB

Deuteranopia (green-blind)

#A8BAEA

Tritanopia (blue-blind)

#00DDDA

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #42d3ea;
/* rgb */ color: rgb(66, 211, 234);
/* oklch */ color: oklch(80.1% 0.123 210.4);

Tailwind

colors: {
  custom: {
    50: '#8de1f0',
    500: '#42d3ea',
    950: '#000000',
  },
}

SCSS

$custom: #42d3ea;
$custom-light: #8de1f0;
$custom-dark: #000000;

JSON

{
  "hex": "#42d3ea",
  "rgb": {
    "r": 66,
    "g": 211,
    "b": 234
  },
  "hsl": {
    "h": 188.214,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.80083,
    "c": 0.12289,
    "h": 210.4
  },
  "luminance": 0.53687
}

Semantic roles & 50–950 ramp

primary

#42D3EA

secondary

#A23E2E

accent

#4C31F6

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #42D3EA

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

Preview Lab → · Contrast checker → · Palette generator →