#42B0E1#42B0E1

#42B0E1 is a light, vivid cyan. Relative luminance 0.376; OKLCH L 71.5% C 0.121 H 231.4°. Best body text is #000000 at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#42B0E1
RGB	rgb(66, 176, 225)
HSL	hsl(198, 73%, 57%)
HSV	hsv(198, 71%, 88%)
CMYK	cmyk(70.7%, 21.8%, 0%, 11.8%)
CIE-LAB	lab(67.76, -15.52, -33.65)
CIE-LCH	lch(67.76, 37.06, 245.23°)
OKLab	oklab(71.53% -0.0756 -0.0945)
OKLCH	oklch(71.53% 0.121 231.4)
XYZ	xyz(31.3573, 37.6416, 76.8325)
Luminance	0.3765 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0E1 #E17342

analogous

#42E1C3 #42B0E1 #4260E1

triadic

#42B0E1 #E142B0 #B0E142

tetradic

#42B0E1 #C342E1 #E17342 #60E142

square

#42B0E1 #C342E1 #E17342 #60E142

split-complementary

#42B0E1 #E14260 #E1C342

monochromatic

#176C92 #1F93C6 #42B0E1 #77C6E9 #ACDCF2

Accessibility & contrast

On white

2.46

#42B0E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.53

#42B0E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0E1

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0E1	#FFFFFF	#000000	##000000
##42B0E1	1.00	2.46	8.53	8.53
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.53	21.00	1.00	1.00
##000000	8.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97AEE3

Deuteranopia (green-blind)

#829EE0

Tritanopia (blue-blind)

#00BDC0

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b0e1;
/* rgb */ color: rgb(66, 176, 225);
/* oklch */ color: oklch(71.5% 0.121 231.4);

Tailwind

colors: {
  custom: {
    50: '#8ac7ea',
    500: '#42b0e1',
    950: '#000000',
  },
}

SCSS

$custom: #42b0e1;
$custom-light: #8ac7ea;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0e1",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 225
  },
  "hsl": {
    "h": 198.491,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.71531,
    "c": 0.12099,
    "h": 231.4
  },
  "luminance": 0.37645
}

Semantic roles & 50–950 ramp

primary

#42B0E1

secondary

#E0B39F

accent

#7138EF

background

#F9FCFE

surface

#F1F8FD

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B0E1

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

Preview Lab → · Contrast checker → · Palette generator →