#42BDDF#42BDDF

#42BDDF is a light, moderate cyan. Relative luminance 0.429; OKLCH L 74.5% C 0.116 H 220.1°. Best body text is #000000 at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#42BDDF
RGB	rgb(66, 189, 223)
HSL	hsl(193, 71%, 57%)
HSV	hsv(193, 70%, 87%)
CMYK	cmyk(70.4%, 15.2%, 0%, 12.5%)
CIE-LAB	lab(71.47, -22.94, -26.83)
CIE-LCH	lch(71.47, 35.30, 229.47°)
OKLab	oklab(74.48% -0.0889 -0.0749)
OKLCH	oklch(74.48% 0.116 220.1)
XYZ	xyz(33.7581, 42.8773, 76.2947)
Luminance	0.4288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BDDF #DF6442

analogous

#42DFB3 #42BDDF #426FDF

triadic

#42BDDF #DF42BD #BDDF42

tetradic

#42BDDF #B342DF #DF6442 #6FDF42

square

#42BDDF #B342DF #DF6442 #6FDF42

split-complementary

#42BDDF #DF426F #DFB342

monochromatic

#18758E #21A0C3 #42BDDF #76CFE8 #ABE2F1

Accessibility & contrast

On white

2.19

#42BDDF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.58

#42BDDF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BDDF

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BDDF	#FFFFFF	#000000	##000000
##42BDDF	1.00	2.19	9.58	9.58
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.58	21.00	1.00	1.00
##000000	9.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B8E1

Deuteranopia (green-blind)

#93A8DF

Tritanopia (blue-blind)

#00C8C8

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #42bddf;
/* rgb */ color: rgb(66, 189, 223);
/* oklch */ color: oklch(74.5% 0.116 220.1);

Tailwind

colors: {
  custom: {
    50: '#8ad1e9',
    500: '#42bddf',
    950: '#000000',
  },
}

SCSS

$custom: #42bddf;
$custom-light: #8ad1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#42bddf",
  "rgb": {
    "r": 66,
    "g": 189,
    "b": 223
  },
  "hsl": {
    "h": 192.994,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.74479,
    "c": 0.11629,
    "h": 220.1
  },
  "luminance": 0.42881
}

Semantic roles & 50–950 ramp

primary

#42BDDF

secondary

#DFAC9E

accent

#613AEE

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #42BDDF

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

Preview Lab → · Contrast checker → · Palette generator →