#42B1D4#42B1D4

#42B1D4 is a light, moderate cyan. Relative luminance 0.374; OKLCH L 71.2% C 0.111 H 222.7°. Best body text is #000000 at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#42B1D4
RGB	rgb(66, 177, 212)
HSL	hsl(194, 63%, 55%)
HSV	hsv(194, 69%, 83%)
CMYK	cmyk(68.9%, 16.5%, 0%, 16.9%)
CIE-LAB	lab(67.54, -20.23, -26.84)
CIE-LCH	lch(67.54, 33.62, 232.99°)
OKLab	oklab(71.19% -0.0813 -0.075)
OKLCH	oklch(71.19% 0.111 222.7)
XYZ	xyz(29.8477, 37.3526, 67.9113)
Luminance	0.3736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1D4 #D46542

analogous

#42D4AE #42B1D4 #4268D4

triadic

#42B1D4 #D442B1 #B1D442

tetradic

#42B1D4 #AE42D4 #D46542 #68D442

square

#42B1D4 #AE42D4 #D46542 #68D442

split-complementary

#42B1D4 #D44268 #D4AE42

monochromatic

#1D677F #2890B1 #42B1D4 #74C6DF #A6DAEB

Accessibility & contrast

On white

2.48

#42B1D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.47

#42B1D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1D4

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1D4	#FFFFFF	#000000	##000000
##42B1D4	1.00	2.48	8.47	8.47
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.47	21.00	1.00	1.00
##000000	8.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DADD6

Deuteranopia (green-blind)

#899ED4

Tritanopia (blue-blind)

#00BCBC

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #42b1d4;
/* rgb */ color: rgb(66, 177, 212);
/* oklch */ color: oklch(71.2% 0.111 222.7);

Tailwind

colors: {
  custom: {
    50: '#88c8e1',
    500: '#42b1d4',
    950: '#000000',
  },
}

SCSS

$custom: #42b1d4;
$custom-light: #88c8e1;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1d4",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 212
  },
  "hsl": {
    "h": 194.384,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.71192,
    "c": 0.11058,
    "h": 222.7
  },
  "luminance": 0.37356
}

Semantic roles & 50–950 ramp

primary

#42B1D4

secondary

#D8A99A

accent

#6942E6

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B1D4

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

Preview Lab → · Contrast checker → · Palette generator →