#42B9DE#42B9DE

#42B9DE is a light, moderate cyan. Relative luminance 0.411; OKLCH L 73.5% C 0.116 H 222.6°. Best body text is #000000 at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#42B9DE
RGB	rgb(66, 185, 222)
HSL	hsl(194, 70%, 56%)
HSV	hsv(194, 70%, 87%)
CMYK	cmyk(70.3%, 16.7%, 0%, 12.9%)
CIE-LAB	lab(70.26, -21.21, -28.14)
CIE-LCH	lch(70.26, 35.23, 232.99°)
OKLab	oklab(73.5% -0.0854 -0.0786)
OKLCH	oklch(73.5% 0.116 222.6)
XYZ	xyz(32.7751, 41.1264, 75.3039)
Luminance	0.4113 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B9DE #DE6742

analogous

#42DEB5 #42B9DE #426BDE

triadic

#42B9DE #DE42B9 #B9DE42

tetradic

#42B9DE #B542DE #DE6742 #6BDE42

square

#42B9DE #B542DE #DE6742 #6BDE42

split-complementary

#42B9DE #DE426B #DEB542

monochromatic

#19718D #229BC1 #42B9DE #76CCE7 #AAE0F0

Accessibility & contrast

On white

2.28

#42B9DE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.23

#42B9DE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B9DE

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B9DE	#FFFFFF	#000000	##000000
##42B9DE	1.00	2.28	9.23	9.23
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.23	21.00	1.00	1.00
##000000	9.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B5E0

Deuteranopia (green-blind)

#8EA5DE

Tritanopia (blue-blind)

#00C4C5

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #42b9de;
/* rgb */ color: rgb(66, 185, 222);
/* oklch */ color: oklch(73.5% 0.116 222.6);

Tailwind

colors: {
  custom: {
    50: '#8acee8',
    500: '#42b9de',
    950: '#000000',
  },
}

SCSS

$custom: #42b9de;
$custom-light: #8acee8;
$custom-dark: #000000;

JSON

{
  "hex": "#42b9de",
  "rgb": {
    "r": 66,
    "g": 185,
    "b": 222
  },
  "hsl": {
    "h": 194.231,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.73499,
    "c": 0.11611,
    "h": 222.6
  },
  "luminance": 0.4113
}

Semantic roles & 50–950 ramp

primary

#42B9DE

secondary

#DEAD9E

accent

#653BED

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B9DE

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

Preview Lab → · Contrast checker → · Palette generator →