#42C3E1#42C3E1

#42C3E1 is a light, moderate cyan. Relative luminance 0.456; OKLCH L 76.0% C 0.117 H 216.7°. Best body text is #000000 at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#42C3E1
RGB	rgb(66, 195, 225)
HSL	hsl(191, 73%, 57%)
HSV	hsv(191, 71%, 88%)
CMYK	cmyk(70.7%, 13.3%, 0%, 11.8%)
CIE-LAB	lab(73.30, -25.35, -25.11)
CIE-LCH	lch(73.30, 35.68, 224.74°)
OKLab	oklab(75.97% -0.094 -0.07)
OKLCH	oklch(75.97% 0.117 216.7)
XYZ	xyz(35.3468, 45.6206, 78.1623)
Luminance	0.4562 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C3E1 #E16042

analogous

#42E1B0 #42C3E1 #4273E1

triadic

#42C3E1 #E142C3 #C3E142

tetradic

#42C3E1 #B042E1 #E16042 #73E142

square

#42C3E1 #B042E1 #E16042 #73E142

split-complementary

#42C3E1 #E14273 #E1B042

monochromatic

#177A92 #1FA7C6 #42C3E1 #77D4E9 #ACE5F2

Accessibility & contrast

On white

2.07

#42C3E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.12

#42C3E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C3E1

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C3E1	#FFFFFF	#000000	##000000
##42C3E1	1.00	2.07	10.12	10.12
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.12	21.00	1.00	1.00
##000000	10.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBDE3

Deuteranopia (green-blind)

#99ADE1

Tritanopia (blue-blind)

#00CECC

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #42c3e1;
/* rgb */ color: rgb(66, 195, 225);
/* oklch */ color: oklch(76.0% 0.117 216.7);

Tailwind

colors: {
  custom: {
    50: '#8bd5ea',
    500: '#42c3e1',
    950: '#000000',
  },
}

SCSS

$custom: #42c3e1;
$custom-light: #8bd5ea;
$custom-dark: #000000;

JSON

{
  "hex": "#42c3e1",
  "rgb": {
    "r": 66,
    "g": 195,
    "b": 225
  },
  "hsl": {
    "h": 191.321,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.75971,
    "c": 0.11725,
    "h": 216.7
  },
  "luminance": 0.45625
}

Semantic roles & 50–950 ramp

primary

#42C3E1

secondary

#E0AB9F

accent

#5B38EF

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #42C3E1

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

Preview Lab → · Contrast checker → · Palette generator →