#42BCEC#42BCEC

#42BCEC is a light, vivid cyan. Relative luminance 0.432; OKLCH L 74.8% C 0.126 H 228.5°. Best body text is #000000 at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#42BCEC
RGB	rgb(66, 188, 236)
HSL	hsl(197, 82%, 59%)
HSV	hsv(197, 72%, 93%)
CMYK	cmyk(72%, 20.3%, 0%, 7.5%)
CIE-LAB	lab(71.67, -18.29, -33.58)
CIE-LCH	lch(71.67, 38.23, 241.42°)
OKLab	oklab(74.81% -0.0832 -0.0942)
OKLCH	oklch(74.81% 0.126 228.5)
XYZ	xyz(35.3642, 43.1767, 85.8107)
Luminance	0.4318 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BCEC #EC7242

analogous

#42ECC7 #42BCEC #4267EC

triadic

#42BCEC #EC42BC #BCEC42

tetradic

#42BCEC #C742EC #EC7242 #67EC42

square

#42BCEC #C742EC #EC7242 #67EC42

split-complementary

#42BCEC #EC4267 #ECC742

monochromatic

#107AA3 #16A3DB #42BCEC #7AD0F2 #B1E3F7

Accessibility & contrast

On white

2.18

#42BCEC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.64

#42BCEC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BCEC

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BCEC	#FFFFFF	#000000	##000000
##42BCEC	1.00	2.18	9.64	9.64
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.64	21.00	1.00	1.00
##000000	9.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B9EE

Deuteranopia (green-blind)

#8CA8EB

Tritanopia (blue-blind)

#00CACC

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #42bcec;
/* rgb */ color: rgb(66, 188, 236);
/* oklch */ color: oklch(74.8% 0.126 228.5);

Tailwind

colors: {
  custom: {
    50: '#8cd0f2',
    500: '#42bcec',
    950: '#000000',
  },
}

SCSS

$custom: #42bcec;
$custom-light: #8cd0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#42bcec",
  "rgb": {
    "r": 66,
    "g": 188,
    "b": 236
  },
  "hsl": {
    "h": 196.941,
    "s": 81.731,
    "l": 59.216
  },
  "oklch": {
    "l": 0.74806,
    "c": 0.1257,
    "h": 228.5
  },
  "luminance": 0.43181
}

Semantic roles & 50–950 ramp

primary

#42BCEC

secondary

#E6B6A4

accent

#6830F8

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1417

muted

#7E8285

Preview Lab

Preview with #42BCEC

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

Preview Lab → · Contrast checker → · Palette generator →