#42B8D6#42B8D6

#42B8D6 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 72.9% C 0.111 H 218.2°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#42B8D6
RGB	rgb(66, 184, 214)
HSL	hsl(192, 64%, 55%)
HSV	hsv(192, 69%, 84%)
CMYK	cmyk(69.2%, 14%, 0%, 16.1%)
CIE-LAB	lab(69.68, -23.21, -24.67)
CIE-LCH	lch(69.68, 33.87, 226.75°)
OKLab	oklab(72.93% -0.0875 -0.0688)
OKLCH	oklch(72.93% 0.111 218.2)
XYZ	xyz(31.5198, 40.2907, 69.7210)
Luminance	0.4029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B8D6 #D66042

analogous

#42D6AA #42B8D6 #426ED6

triadic

#42B8D6 #D642B8 #B8D642

tetradic

#42B8D6 #AA42D6 #D66042 #6ED642

square

#42B8D6 #AA42D6 #D66042 #6ED642

split-complementary

#42B8D6 #D6426E #D6AA42

monochromatic

#1C6D82 #2797B4 #42B8D6 #74CBE1 #A7DEEC

Accessibility & contrast

On white

2.32

#42B8D6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#42B8D6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B8D6

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B8D6	#FFFFFF	#000000	##000000
##42B8D6	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B3D8

Deuteranopia (green-blind)

#90A4D6

Tritanopia (blue-blind)

#00C2C1

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #42b8d6;
/* rgb */ color: rgb(66, 184, 214);
/* oklch */ color: oklch(72.9% 0.111 218.2);

Tailwind

colors: {
  custom: {
    50: '#89cde2',
    500: '#42b8d6',
    950: '#000000',
  },
}

SCSS

$custom: #42b8d6;
$custom-light: #89cde2;
$custom-dark: #000000;

JSON

{
  "hex": "#42b8d6",
  "rgb": {
    "r": 66,
    "g": 184,
    "b": 214
  },
  "hsl": {
    "h": 192.162,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.72929,
    "c": 0.11128,
    "h": 218.2
  },
  "luminance": 0.40294
}

Semantic roles & 50–950 ramp

primary

#42B8D6

secondary

#D9A79B

accent

#6240E7

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B8D6

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

Preview Lab → · Contrast checker → · Palette generator →