#42BBDF#42BBDF

#42BBDF is a light, moderate cyan. Relative luminance 0.420; OKLCH L 74.0% C 0.116 H 221.7°. Best body text is #000000 at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#42BBDF
RGB	rgb(66, 187, 223)
HSL	hsl(194, 71%, 57%)
HSV	hsv(194, 70%, 87%)
CMYK	cmyk(70.4%, 16.1%, 0%, 12.5%)
CIE-LAB	lab(70.89, -21.92, -27.73)
CIE-LCH	lch(70.89, 35.34, 231.67°)
OKLab	oklab(74.01% -0.087 -0.0775)
OKLCH	oklch(74.01% 0.116 221.7)
XYZ	xyz(33.3309, 42.0228, 76.1523)
Luminance	0.4203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BBDF #DF6642

analogous

#42DFB5 #42BBDF #426DDF

triadic

#42BBDF #DF42BB #BBDF42

tetradic

#42BBDF #B542DF #DF6642 #6DDF42

square

#42BBDF #B542DF #DF6642 #6DDF42

split-complementary

#42BBDF #DF426D #DFB542

monochromatic

#18738E #219EC3 #42BBDF #76CEE8 #ABE1F1

Accessibility & contrast

On white

2.23

#42BBDF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.41

#42BBDF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBDF

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BBDF	#FFFFFF	#000000	##000000
##42BBDF	1.00	2.23	9.41	9.41
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.41	21.00	1.00	1.00
##000000	9.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B6E1

Deuteranopia (green-blind)

#90A7DF

Tritanopia (blue-blind)

#00C6C7

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #42bbdf;
/* rgb */ color: rgb(66, 187, 223);
/* oklch */ color: oklch(74.0% 0.116 221.7);

Tailwind

colors: {
  custom: {
    50: '#8acfe9',
    500: '#42bbdf',
    950: '#000000',
  },
}

SCSS

$custom: #42bbdf;
$custom-light: #8acfe9;
$custom-dark: #000000;

JSON

{
  "hex": "#42bbdf",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 223
  },
  "hsl": {
    "h": 193.758,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.7401,
    "c": 0.11649,
    "h": 221.7
  },
  "luminance": 0.42027
}

Semantic roles & 50–950 ramp

primary

#42BBDF

secondary

#DFAD9E

accent

#633AEE

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #42BBDF

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

Preview Lab → · Contrast checker → · Palette generator →