#42ADCF#42ADCF

#42ADCF is a light, moderate cyan. Relative luminance 0.355; OKLCH L 70.0% C 0.108 H 222.8°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#42ADCF
RGB	rgb(66, 173, 207)
HSL	hsl(194, 59%, 54%)
HSV	hsv(194, 68%, 81%)
CMYK	cmyk(68.1%, 16.4%, 0%, 18.8%)
CIE-LAB	lab(66.17, -19.73, -26.19)
CIE-LCH	lch(66.17, 32.79, 233.00°)
OKLab	oklab(70.03% -0.0791 -0.0732)
OKLCH	oklch(70.03% 0.108 222.8)
XYZ	xyz(28.4482, 35.5472, 64.3814)
Luminance	0.3555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ADCF #CF6442

analogous

#42CFAA #42ADCF #4266CF

triadic

#42ADCF #CF42AD #ADCF42

tetradic

#42ADCF #AA42CF #CF6442 #66CF42

square

#42ADCF #AA42CF #CF6442 #66CF42

split-complementary

#42ADCF #CF4266 #CFAA42

monochromatic

#1F6278 #2B8BA9 #42ADCF #73C2DB #A4D7E8

Accessibility & contrast

On white

2.59

#42ADCF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#42ADCF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADCF

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ADCF	#FFFFFF	#000000	##000000
##42ADCF	1.00	2.59	8.11	8.11
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.11	21.00	1.00	1.00
##000000	8.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99A9D1

Deuteranopia (green-blind)

#869BCF

Tritanopia (blue-blind)

#00B8B8

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #42adcf;
/* rgb */ color: rgb(66, 173, 207);
/* oklch */ color: oklch(70.0% 0.108 222.8);

Tailwind

colors: {
  custom: {
    50: '#87c5dd',
    500: '#42adcf',
    950: '#000000',
  },
}

SCSS

$custom: #42adcf;
$custom-light: #87c5dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42adcf",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 207
  },
  "hsl": {
    "h": 194.468,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.70033,
    "c": 0.10776,
    "h": 222.8
  },
  "luminance": 0.3555
}

Semantic roles & 50–950 ramp

primary

#42ADCF

secondary

#D5A798

accent

#6B45E3

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #42ADCF

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

Preview Lab → · Contrast checker → · Palette generator →