#42B1CA#42B1CA

#42B1CA is a light, moderate cyan. Relative luminance 0.369; OKLCH L 70.8% C 0.105 H 215.6°. Best body text is #000000 at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#42B1CA
RGB	rgb(66, 177, 202)
HSL	hsl(191, 56%, 53%)
HSV	hsv(191, 67%, 79%)
CMYK	cmyk(67.3%, 12.4%, 0%, 20.8%)
CIE-LAB	lab(67.17, -23.36, -21.89)
CIE-LCH	lch(67.17, 32.02, 223.14°)
OKLab	oklab(70.78% -0.0851 -0.0609)
OKLCH	oklch(70.78% 0.105 215.6)
XYZ	xyz(28.6251, 36.8636, 61.4724)
Luminance	0.3687 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1CA #CA5B42

analogous

#42CA9F #42B1CA #426DCA

triadic

#42B1CA #CA42B1 #B1CA42

tetradic

#42B1CA #9F42CA #CA5B42 #6DCA42

square

#42B1CA #9F42CA #CA5B42 #6DCA42

split-complementary

#42B1CA #CA426D #CA9F42

monochromatic

#206372 #2D8CA2 #42B1CA #72C5D7 #A2D8E5

Accessibility & contrast

On white

2.51

#42B1CA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.37

#42B1CA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1CA

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1CA	#FFFFFF	#000000	##000000
##42B1CA	1.00	2.51	8.37	8.37
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.37	21.00	1.00	1.00
##000000	8.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0ACCB

Deuteranopia (green-blind)

#8C9DCA

Tritanopia (blue-blind)

#00BAB9

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #42b1ca;
/* rgb */ color: rgb(66, 177, 202);
/* oklch */ color: oklch(70.8% 0.105 215.6);

Tailwind

colors: {
  custom: {
    50: '#87c8da',
    500: '#42b1ca',
    950: '#000000',
  },
}

SCSS

$custom: #42b1ca;
$custom-light: #87c8da;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1ca",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 202
  },
  "hsl": {
    "h": 191.029,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70777,
    "c": 0.10469,
    "h": 215.6
  },
  "luminance": 0.36867
}

Semantic roles & 50–950 ramp

primary

#42B1CA

secondary

#D1A196

accent

#6448DF

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0D1314

muted

#7D8283

Preview Lab

Preview with #42B1CA

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

Preview Lab → · Contrast checker → · Palette generator →