#42BCD5#42BCD5

#42BCD5 is a light, moderate cyan. Relative luminance 0.419; OKLCH L 73.8% C 0.111 H 214.1°. Best body text is #000000 at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#42BCD5
RGB	rgb(66, 188, 213)
HSL	hsl(190, 64%, 55%)
HSV	hsv(190, 69%, 84%)
CMYK	cmyk(69%, 11.7%, 0%, 16.5%)
CIE-LAB	lab(70.82, -25.54, -22.37)
CIE-LCH	lch(70.82, 33.95, 221.23°)
OKLab	oklab(73.84% -0.0918 -0.0623)
OKLCH	oklch(73.84% 0.111 214.1)
XYZ	xyz(32.2352, 41.9251, 69.3314)
Luminance	0.4193 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BCD5 #D55B42

analogous

#42D5A4 #42BCD5 #4273D5

triadic

#42BCD5 #D542BC #BCD542

tetradic

#42BCD5 #A442D5 #D55B42 #73D542

square

#42BCD5 #A442D5 #D55B42 #73D542

split-complementary

#42BCD5 #D54273 #D5A442

monochromatic

#1C6F80 #289BB2 #42BCD5 #74CEE0 #A6E0EB

Accessibility & contrast

On white

2.24

#42BCD5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.39

#42BCD5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BCD5

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BCD5	#FFFFFF	#000000	##000000
##42BCD5	1.00	2.24	9.39	9.39
#FFFFFF	2.24	1.00	21.00	21.00
#000000	9.39	21.00	1.00	1.00
##000000	9.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB6D6

Deuteranopia (green-blind)

#95A7D5

Tritanopia (blue-blind)

#00C6C4

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #42bcd5;
/* rgb */ color: rgb(66, 188, 213);
/* oklch */ color: oklch(73.8% 0.111 214.1);

Tailwind

colors: {
  custom: {
    50: '#89d0e2',
    500: '#42bcd5',
    950: '#000000',
  },
}

SCSS

$custom: #42bcd5;
$custom-light: #89d0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#42bcd5",
  "rgb": {
    "r": 66,
    "g": 188,
    "b": 213
  },
  "hsl": {
    "h": 190.204,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.73836,
    "c": 0.11097,
    "h": 214.1
  },
  "luminance": 0.41929
}

Semantic roles & 50–950 ramp

primary

#42BCD5

secondary

#D8A59A

accent

#5D41E7

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BCD5

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

Preview Lab → · Contrast checker → · Palette generator →