#42B2CD#42B2CD

#42B2CD is a light, moderate cyan. Relative luminance 0.374; OKLCH L 71.1% C 0.106 H 216.9°. Best body text is #000000 at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#42B2CD
RGB	rgb(66, 178, 205)
HSL	hsl(192, 58%, 53%)
HSV	hsv(192, 68%, 80%)
CMYK	cmyk(67.8%, 13.2%, 0%, 19.6%)
CIE-LAB	lab(67.58, -22.94, -22.93)
CIE-LCH	lch(67.58, 32.44, 224.99°)
OKLab	oklab(71.14% -0.0849 -0.0639)
OKLCH	oklch(71.14% 0.106 216.9)
XYZ	xyz(29.1820, 37.4036, 63.4274)
Luminance	0.3741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2CD #CD5D42

analogous

#42CDA3 #42B2CD #426CCD

triadic

#42B2CD #CD42B2 #B2CD42

tetradic

#42B2CD #A342CD #CD5D42 #6CCD42

square

#42B2CD #A342CD #CD5D42 #6CCD42

split-complementary

#42B2CD #CD426C #CDA342

monochromatic

#1F6576 #2C8EA6 #42B2CD #72C6DA #A3D9E7

Accessibility & contrast

On white

2.48

#42B2CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.48

#42B2CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2CD

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2CD	#FFFFFF	#000000	##000000
##42B2CD	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)

#A0ADCF

Deuteranopia (green-blind)

#8C9ECD

Tritanopia (blue-blind)

#00BCBA

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b2cd;
/* rgb */ color: rgb(66, 178, 205);
/* oklch */ color: oklch(71.1% 0.106 216.9);

Tailwind

colors: {
  custom: {
    50: '#87c9dc',
    500: '#42b2cd',
    950: '#000000',
  },
}

SCSS

$custom: #42b2cd;
$custom-light: #87c9dc;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2cd",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 205
  },
  "hsl": {
    "h": 191.655,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.71137,
    "c": 0.10629,
    "h": 216.9
  },
  "luminance": 0.37407
}

Semantic roles & 50–950 ramp

primary

#42B2CD

secondary

#D3A397

accent

#6546E1

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #42B2CD

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

Preview Lab → · Contrast checker → · Palette generator →