#42B0C8#42B0C8

#42B0C8 is a light, moderate cyan. Relative luminance 0.364; OKLCH L 70.5% C 0.104 H 215.0°. Best body text is #000000 at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#42B0C8
RGB	rgb(66, 176, 200)
HSL	hsl(191, 55%, 52%)
HSV	hsv(191, 67%, 78%)
CMYK	cmyk(67%, 12%, 0%, 21.6%)
CIE-LAB	lab(66.81, -23.47, -21.35)
CIE-LCH	lch(66.81, 31.73, 222.30°)
OKLab	oklab(70.46% -0.0849 -0.0594)
OKLCH	oklch(70.46% 0.104 215)
XYZ	xyz(28.1931, 36.3759, 60.1678)
Luminance	0.3638 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0C8 #C85A42

analogous

#42C89D #42B0C8 #426DC8

triadic

#42B0C8 #C842B0 #B0C842

tetradic

#42B0C8 #9D42C8 #C85A42 #6DC842

square

#42B0C8 #9D42C8 #C85A42 #6DC842

split-complementary

#42B0C8 #C8426D #C89D42

monochromatic

#20616F #2E8A9F #42B0C8 #71C4D6 #A1D8E4

Accessibility & contrast

On white

2.54

#42B0C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.28

#42B0C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0C8

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0C8	#FFFFFF	#000000	##000000
##42B0C8	1.00	2.54	8.28	8.28
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.28	21.00	1.00	1.00
##000000	8.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FABC9

Deuteranopia (green-blind)

#8C9CC8

Tritanopia (blue-blind)

#00B9B7

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #42b0c8;
/* rgb */ color: rgb(66, 176, 200);
/* oklch */ color: oklch(70.5% 0.104 215.0);

Tailwind

colors: {
  custom: {
    50: '#86c7d8',
    500: '#42b0c8',
    950: '#000000',
  },
}

SCSS

$custom: #42b0c8;
$custom-light: #86c7d8;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0c8",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 200
  },
  "hsl": {
    "h": 190.746,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.70457,
    "c": 0.10362,
    "h": 215
  },
  "luminance": 0.36379
}

Semantic roles & 50–950 ramp

primary

#42B0C8

secondary

#D0A096

accent

#644ADE

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1314

muted

#7D8283

Preview Lab

Preview with #42B0C8

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

Preview Lab → · Contrast checker → · Palette generator →