#42BBD4#42BBD4

#42BBD4 is a light, moderate cyan. Relative luminance 0.415; OKLCH L 73.6% C 0.110 H 214.3°. Best body text is #000000 at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#42BBD4
RGB	rgb(66, 187, 212)
HSL	hsl(190, 63%, 55%)
HSV	hsv(190, 69%, 83%)
CMYK	cmyk(68.9%, 11.8%, 0%, 16.9%)
CIE-LAB	lab(70.49, -25.34, -22.33)
CIE-LCH	lch(70.49, 33.78, 221.39°)
OKLab	oklab(73.56% -0.0912 -0.0622)
OKLCH	oklch(73.56% 0.11 214.3)
XYZ	xyz(31.8958, 41.4487, 68.5940)
Luminance	0.4145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BBD4 #D45B42

analogous

#42D4A4 #42BBD4 #4272D4

triadic

#42BBD4 #D442BB #BBD442

tetradic

#42BBD4 #A442D4 #D45B42 #72D442

square

#42BBD4 #A442D4 #D45B42 #72D442

split-complementary

#42BBD4 #D44272 #D4A442

monochromatic

#1D6E7F #2899B1 #42BBD4 #74CDDF #A6DFEB

Accessibility & contrast

On white

2.26

#42BBD4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.29

#42BBD4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBD4

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BBD4	#FFFFFF	#000000	##000000
##42BBD4	1.00	2.26	9.29	9.29
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.29	21.00	1.00	1.00
##000000	9.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B5D5

Deuteranopia (green-blind)

#94A6D4

Tritanopia (blue-blind)

#00C5C3

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #42bbd4;
/* rgb */ color: rgb(66, 187, 212);
/* oklch */ color: oklch(73.6% 0.110 214.3);

Tailwind

colors: {
  custom: {
    50: '#89cfe1',
    500: '#42bbd4',
    950: '#000000',
  },
}

SCSS

$custom: #42bbd4;
$custom-light: #89cfe1;
$custom-dark: #000000;

JSON

{
  "hex": "#42bbd4",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 212
  },
  "hsl": {
    "h": 190.274,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.73559,
    "c": 0.11041,
    "h": 214.3
  },
  "luminance": 0.41452
}

Semantic roles & 50–950 ramp

primary

#42BBD4

secondary

#D8A59A

accent

#5E42E6

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BBD4

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

Preview Lab → · Contrast checker → · Palette generator →