#42ABD4#42ABD4

#42ABD4 is a light, moderate cyan. Relative luminance 0.350; OKLCH L 69.8% C 0.112 H 227.7°. Best body text is #000000 at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#42ABD4
RGB	rgb(66, 171, 212)
HSL	hsl(197, 63%, 55%)
HSV	hsv(197, 69%, 83%)
CMYK	cmyk(68.9%, 19.3%, 0%, 16.9%)
CIE-LAB	lab(65.78, -17.08, -29.56)
CIE-LCH	lch(65.78, 34.14, 239.98°)
OKLab	oklab(69.78% -0.0753 -0.0828)
OKLCH	oklch(69.78% 0.112 227.7)
XYZ	xyz(28.6886, 35.0343, 67.5249)
Luminance	0.3504 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ABD4 #D46B42

analogous

#42D4B4 #42ABD4 #4262D4

triadic

#42ABD4 #D442AB #ABD442

tetradic

#42ABD4 #B442D4 #D46B42 #62D442

square

#42ABD4 #B442D4 #D46B42 #62D442

split-complementary

#42ABD4 #D44262 #D4B442

monochromatic

#1D637F #288AB1 #42ABD4 #74C1DF #A6D7EB

Accessibility & contrast

On white

2.62

#42ABD4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.01

#42ABD4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ABD4

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ABD4	#FFFFFF	#000000	##000000
##42ABD4	1.00	2.62	8.01	8.01
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.01	21.00	1.00	1.00
##000000	8.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A8D6

Deuteranopia (green-blind)

#8199D3

Tritanopia (blue-blind)

#00B7B8

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #42abd4;
/* rgb */ color: rgb(66, 171, 212);
/* oklch */ color: oklch(69.8% 0.112 227.7);

Tailwind

colors: {
  custom: {
    50: '#87c4e1',
    500: '#42abd4',
    950: '#000000',
  },
}

SCSS

$custom: #42abd4;
$custom-light: #87c4e1;
$custom-dark: #000000;

JSON

{
  "hex": "#42abd4",
  "rgb": {
    "r": 66,
    "g": 171,
    "b": 212
  },
  "hsl": {
    "h": 196.849,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.69779,
    "c": 0.11188,
    "h": 227.7
  },
  "luminance": 0.35038
}

Semantic roles & 50–950 ramp

primary

#42ABD4

secondary

#D8AB9A

accent

#7042E6

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #42ABD4

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

Preview Lab → · Contrast checker → · Palette generator →