#42C0DB#42C0DB

#42C0DB is a light, moderate cyan. Relative luminance 0.440; OKLCH L 75.0% C 0.114 H 215.0°. Best body text is #000000 at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#42C0DB
RGB	rgb(66, 192, 219)
HSL	hsl(191, 68%, 56%)
HSV	hsv(191, 70%, 86%)
CMYK	cmyk(69.9%, 12.3%, 0%, 14.1%)
CIE-LAB	lab(72.21, -25.70, -23.53)
CIE-LCH	lch(72.21, 34.84, 222.48°)
OKLab	oklab(75.02% -0.0934 -0.0655)
OKLCH	oklch(75.02% 0.114 215)
XYZ	xyz(33.8772, 43.9681, 73.7054)
Luminance	0.4397 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C0DB #DB5D42

analogous

#42DBA9 #42C0DB #4273DB

triadic

#42C0DB #DB42C0 #C0DB42

tetradic

#42C0DB #A942DB #DB5D42 #73DB42

square

#42C0DB #A942DB #DB5D42 #73DB42

split-complementary

#42C0DB #DB4273 #DBA942

monochromatic

#1A7589 #24A1BC #42C0DB #75D1E5 #A9E2EF

Accessibility & contrast

On white

2.14

#42C0DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.79

#42C0DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C0DB

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C0DB	#FFFFFF	#000000	##000000
##42C0DB	1.00	2.14	9.79	9.79
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.79	21.00	1.00	1.00
##000000	9.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBADD

Deuteranopia (green-blind)

#98AADB

Tritanopia (blue-blind)

#00CAC8

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #42c0db;
/* rgb */ color: rgb(66, 192, 219);
/* oklch */ color: oklch(75.0% 0.114 215.0);

Tailwind

colors: {
  custom: {
    50: '#8ad3e6',
    500: '#42c0db',
    950: '#000000',
  },
}

SCSS

$custom: #42c0db;
$custom-light: #8ad3e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42c0db",
  "rgb": {
    "r": 66,
    "g": 192,
    "b": 219
  },
  "hsl": {
    "h": 190.588,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.75023,
    "c": 0.11413,
    "h": 215
  },
  "luminance": 0.43972
}

Semantic roles & 50–950 ramp

primary

#42C0DB

secondary

#DCA89D

accent

#5C3DEB

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1415

muted

#7E8284

Preview Lab

Preview with #42C0DB

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

Preview Lab → · Contrast checker → · Palette generator →