#42C0E8#42C0E8

#42C0E8 is a light, vivid cyan. Relative luminance 0.447; OKLCH L 75.6% C 0.122 H 223.3°. Best body text is #000000 at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#42C0E8
RGB	rgb(66, 192, 232)
HSL	hsl(194, 78%, 58%)
HSV	hsv(194, 72%, 91%)
CMYK	cmyk(71.6%, 17.2%, 0%, 9%)
CIE-LAB	lab(72.68, -21.64, -29.86)
CIE-LCH	lch(72.68, 36.87, 234.07°)
OKLab	oklab(75.56% -0.0885 -0.0835)
OKLCH	oklch(75.56% 0.122 223.3)
XYZ	xyz(35.6559, 44.6796, 83.0731)
Luminance	0.4468 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C0E8 #E86A42

analogous

#42E8BD #42C0E8 #426DE8

triadic

#42C0E8 #E842C0 #C0E842

tetradic

#42C0E8 #BD42E8 #E86A42 #6DE842

square

#42C0E8 #BD42E8 #E86A42 #6DE842

split-complementary

#42C0E8 #E8426D #E8BD42

monochromatic

#137B9D #1AA6D3 #42C0E8 #79D2EF #AFE4F5

Accessibility & contrast

On white

2.11

#42C0E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.94

#42C0E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C0E8

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C0E8	#FFFFFF	#000000	##000000
##42C0E8	1.00	2.11	9.94	9.94
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.94	21.00	1.00	1.00
##000000	9.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9BCEA

Deuteranopia (green-blind)

#93ABE8

Tritanopia (blue-blind)

#00CCCD

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #42c0e8;
/* rgb */ color: rgb(66, 192, 232);
/* oklch */ color: oklch(75.6% 0.122 223.3);

Tailwind

colors: {
  custom: {
    50: '#8bd3ef',
    500: '#42c0e8',
    950: '#000000',
  },
}

SCSS

$custom: #42c0e8;
$custom-light: #8bd3ef;
$custom-dark: #000000;

JSON

{
  "hex": "#42c0e8",
  "rgb": {
    "r": 66,
    "g": 192,
    "b": 232
  },
  "hsl": {
    "h": 194.458,
    "s": 78.302,
    "l": 58.431
  },
  "oklch": {
    "l": 0.7556,
    "c": 0.12169,
    "h": 223.3
  },
  "luminance": 0.44684
}

Semantic roles & 50–950 ramp

primary

#42C0E8

secondary

#E4B2A2

accent

#6233F5

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #42C0E8

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

Preview Lab → · Contrast checker → · Palette generator →