#42B0DC#42B0DC

#42B0DC is a light, moderate cyan. Relative luminance 0.374; OKLCH L 71.3% C 0.117 H 228.5°. Best body text is #000000 at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#42B0DC
RGB	rgb(66, 176, 220)
HSL	hsl(197, 69%, 56%)
HSV	hsv(197, 70%, 86%)
CMYK	cmyk(70%, 20%, 0%, 13.7%)
CIE-LAB	lab(67.56, -17.15, -31.22)
CIE-LCH	lch(67.56, 35.62, 241.22°)
OKLab	oklab(71.31% -0.0773 -0.0875)
OKLCH	oklch(71.31% 0.117 228.5)
XYZ	xyz(30.6852, 37.3728, 73.2927)
Luminance	0.3738 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0DC #DC6E42

analogous

#42DCBB #42B0DC #4263DC

triadic

#42B0DC #DC42B0 #B0DC42

tetradic

#42B0DC #BB42DC #DC6E42 #63DC42

square

#42B0DC #BB42DC #DC6E42 #63DC42

split-complementary

#42B0DC #DC4263 #DCBB42

monochromatic

#1A6A8A #2392BE #42B0DC #76C6E6 #A9DBEF

Accessibility & contrast

On white

2.48

#42B0DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.48

#42B0DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0DC

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0DC	#FFFFFF	#000000	##000000
##42B0DC	1.00	2.48	8.48	8.48
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.48	21.00	1.00	1.00
##000000	8.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99ADDE

Deuteranopia (green-blind)

#849EDB

Tritanopia (blue-blind)

#00BCBE

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b0dc;
/* rgb */ color: rgb(66, 176, 220);
/* oklch */ color: oklch(71.3% 0.117 228.5);

Tailwind

colors: {
  custom: {
    50: '#89c7e7',
    500: '#42b0dc',
    950: '#000000',
  },
}

SCSS

$custom: #42b0dc;
$custom-light: #89c7e7;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0dc",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 220
  },
  "hsl": {
    "h": 197.143,
    "s": 68.75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.71306,
    "c": 0.11678,
    "h": 228.5
  },
  "luminance": 0.37376
}

Semantic roles & 50–950 ramp

primary

#42B0DC

secondary

#DDAF9D

accent

#6E3CEC

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B0DC

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

Preview Lab → · Contrast checker → · Palette generator →