#42ADD4#42ADD4

#42ADD4 is a light, moderate cyan. Relative luminance 0.358; OKLCH L 70.2% C 0.111 H 226.1°. Best body text is #000000 at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#42ADD4
RGB	rgb(66, 173, 212)
HSL	hsl(196, 63%, 55%)
HSV	hsv(196, 69%, 83%)
CMYK	cmyk(68.9%, 18.4%, 0%, 16.9%)
CIE-LAB	lab(66.36, -18.14, -28.66)
CIE-LCH	lch(66.36, 33.92, 237.66°)
OKLab	oklab(70.25% -0.0773 -0.0802)
OKLCH	oklch(70.25% 0.111 226.1)
XYZ	xyz(29.0692, 35.7956, 67.6518)
Luminance	0.3580 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ADD4 #D46942

analogous

#42D4B2 #42ADD4 #4264D4

triadic

#42ADD4 #D442AD #ADD442

tetradic

#42ADD4 #B242D4 #D46942 #64D442

square

#42ADD4 #B242D4 #D46942 #64D442

split-complementary

#42ADD4 #D44264 #D4B242

monochromatic

#1D657F #288CB1 #42ADD4 #74C3DF #A6D8EB

Accessibility & contrast

On white

2.57

#42ADD4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.16

#42ADD4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADD4

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ADD4	#FFFFFF	#000000	##000000
##42ADD4	1.00	2.57	8.16	8.16
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.16	21.00	1.00	1.00
##000000	8.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98AAD6

Deuteranopia (green-blind)

#849BD4

Tritanopia (blue-blind)

#00B8BA

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #42add4;
/* rgb */ color: rgb(66, 173, 212);
/* oklch */ color: oklch(70.2% 0.111 226.1);

Tailwind

colors: {
  custom: {
    50: '#88c5e1',
    500: '#42add4',
    950: '#000000',
  },
}

SCSS

$custom: #42add4;
$custom-light: #88c5e1;
$custom-dark: #000000;

JSON

{
  "hex": "#42add4",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 212
  },
  "hsl": {
    "h": 196.027,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.70249,
    "c": 0.11135,
    "h": 226.1
  },
  "luminance": 0.35799
}

Semantic roles & 50–950 ramp

primary

#42ADD4

secondary

#D8AB9A

accent

#6E42E6

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42ADD4

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

Preview Lab → · Contrast checker → · Palette generator →