#42B2CA#42B2CA

#42B2CA is a light, moderate cyan. Relative luminance 0.373; OKLCH L 71.0% C 0.105 H 214.7°. Best body text is #000000 at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#42B2CA
RGB	rgb(66, 178, 202)
HSL	hsl(191, 56%, 53%)
HSV	hsv(191, 67%, 79%)
CMYK	cmyk(67.3%, 11.9%, 0%, 20.8%)
CIE-LAB	lab(67.47, -23.87, -21.44)
CIE-LCH	lch(67.47, 32.09, 221.93°)
OKLab	oklab(71.02% -0.0861 -0.0597)
OKLCH	oklch(71.02% 0.105 214.7)
XYZ	xyz(28.8234, 37.2601, 61.5385)
Luminance	0.3726 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2CA #CA5A42

analogous

#42CA9E #42B2CA #426ECA

triadic

#42B2CA #CA42B2 #B2CA42

tetradic

#42B2CA #9E42CA #CA5A42 #6ECA42

square

#42B2CA #9E42CA #CA5A42 #6ECA42

split-complementary

#42B2CA #CA426E #CA9E42

monochromatic

#206372 #2D8DA2 #42B2CA #72C5D7 #A2D9E5

Accessibility & contrast

On white

2.48

#42B2CA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.45

#42B2CA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2CA

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2CA	#FFFFFF	#000000	##000000
##42B2CA	1.00	2.48	8.45	8.45
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.45	21.00	1.00	1.00
##000000	8.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1ACCB

Deuteranopia (green-blind)

#8E9ECA

Tritanopia (blue-blind)

#00BBB9

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #42b2ca;
/* rgb */ color: rgb(66, 178, 202);
/* oklch */ color: oklch(71.0% 0.105 214.7);

Tailwind

colors: {
  custom: {
    50: '#87c9da',
    500: '#42b2ca',
    950: '#000000',
  },
}

SCSS

$custom: #42b2ca;
$custom-light: #87c9da;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2ca",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 202
  },
  "hsl": {
    "h": 190.588,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.71016,
    "c": 0.10479,
    "h": 214.7
  },
  "luminance": 0.37263
}

Semantic roles & 50–950 ramp

primary

#42B2CA

secondary

#D1A196

accent

#6348DF

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0D1314

muted

#7D8283

Preview Lab

Preview with #42B2CA

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

Preview Lab → · Contrast checker → · Palette generator →