#42BBD5#42BBD5

#42BBD5 is a light, moderate cyan. Relative luminance 0.415; OKLCH L 73.6% C 0.111 H 215.0°. Best body text is #000000 at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#42BBD5
RGB	rgb(66, 187, 213)
HSL	hsl(191, 64%, 55%)
HSV	hsv(191, 69%, 84%)
CMYK	cmyk(69%, 12.2%, 0%, 16.5%)
CIE-LAB	lab(70.52, -25.03, -22.82)
CIE-LCH	lch(70.52, 33.88, 222.36°)
OKLab	oklab(73.6% -0.0908 -0.0636)
OKLCH	oklch(73.6% 0.111 215)
XYZ	xyz(32.0223, 41.4994, 69.2604)
Luminance	0.4150 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BBD5 #D55C42

analogous

#42D5A5 #42BBD5 #4272D5

triadic

#42BBD5 #D542BB #BBD542

tetradic

#42BBD5 #A542D5 #D55C42 #72D542

square

#42BBD5 #A542D5 #D55C42 #72D542

split-complementary

#42BBD5 #D54272 #D5A542

monochromatic

#1C6F80 #289AB2 #42BBD5 #74CDE0 #A6DFEB

Accessibility & contrast

On white

2.26

#42BBD5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.30

#42BBD5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBD5

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BBD5	#FFFFFF	#000000	##000000
##42BBD5	1.00	2.26	9.30	9.30
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.30	21.00	1.00	1.00
##000000	9.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B5D6

Deuteranopia (green-blind)

#94A6D5

Tritanopia (blue-blind)

#00C5C3

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #42bbd5;
/* rgb */ color: rgb(66, 187, 213);
/* oklch */ color: oklch(73.6% 0.111 215.0);

Tailwind

colors: {
  custom: {
    50: '#89cfe2',
    500: '#42bbd5',
    950: '#000000',
  },
}

SCSS

$custom: #42bbd5;
$custom-light: #89cfe2;
$custom-dark: #000000;

JSON

{
  "hex": "#42bbd5",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 213
  },
  "hsl": {
    "h": 190.612,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.73599,
    "c": 0.11087,
    "h": 215
  },
  "luminance": 0.41503
}

Semantic roles & 50–950 ramp

primary

#42BBD5

secondary

#D8A59A

accent

#5E41E7

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BBD5

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

Preview Lab → · Contrast checker → · Palette generator →