#42B4D4#42B4D4

#42B4D4 is a light, moderate cyan. Relative luminance 0.386; OKLCH L 71.9% C 0.110 H 220.2°. Best body text is #000000 at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#42B4D4
RGB	rgb(66, 180, 212)
HSL	hsl(193, 63%, 55%)
HSV	hsv(193, 69%, 83%)
CMYK	cmyk(68.9%, 15.1%, 0%, 16.9%)
CIE-LAB	lab(68.42, -21.79, -25.49)
CIE-LCH	lch(68.42, 33.53, 229.48°)
OKLab	oklab(71.9% -0.0842 -0.0711)
OKLCH	oklch(71.9% 0.11 220.2)
XYZ	xyz(30.4468, 38.5508, 68.1110)
Luminance	0.3855 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B4D4 #D46242

analogous

#42D4AB #42B4D4 #426BD4

triadic

#42B4D4 #D442B4 #B4D442

tetradic

#42B4D4 #AB42D4 #D46242 #6BD442

square

#42B4D4 #AB42D4 #D46242 #6BD442

split-complementary

#42B4D4 #D4426B #D4AB42

monochromatic

#1D697F #2893B1 #42B4D4 #74C8DF #A6DCEB

Accessibility & contrast

On white

2.41

#42B4D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.71

#42B4D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B4D4

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B4D4	#FFFFFF	#000000	##000000
##42B4D4	1.00	2.41	8.71	8.71
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.71	21.00	1.00	1.00
##000000	8.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AFD6

Deuteranopia (green-blind)

#8CA0D4

Tritanopia (blue-blind)

#00BEBE

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #42b4d4;
/* rgb */ color: rgb(66, 180, 212);
/* oklch */ color: oklch(71.9% 0.110 220.2);

Tailwind

colors: {
  custom: {
    50: '#88cae1',
    500: '#42b4d4',
    950: '#000000',
  },
}

SCSS

$custom: #42b4d4;
$custom-light: #88cae1;
$custom-dark: #000000;

JSON

{
  "hex": "#42b4d4",
  "rgb": {
    "r": 66,
    "g": 180,
    "b": 212
  },
  "hsl": {
    "h": 193.151,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.719,
    "c": 0.11026,
    "h": 220.2
  },
  "luminance": 0.38554
}

Semantic roles & 50–950 ramp

primary

#42B4D4

secondary

#D8A89A

accent

#6642E6

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B4D4

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

Preview Lab → · Contrast checker → · Palette generator →