#42C4E1#42C4E1

#42C4E1 is a light, moderate cyan. Relative luminance 0.461; OKLCH L 76.2% C 0.117 H 215.9°. Best body text is #000000 at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#42C4E1
RGB	rgb(66, 196, 225)
HSL	hsl(191, 73%, 57%)
HSV	hsv(191, 71%, 88%)
CMYK	cmyk(70.7%, 12.9%, 0%, 11.8%)
CIE-LAB	lab(73.59, -25.85, -24.67)
CIE-LCH	lch(73.59, 35.73, 223.66°)
OKLab	oklab(76.21% -0.095 -0.0688)
OKLCH	oklch(76.21% 0.117 215.9)
XYZ	xyz(35.5716, 46.0702, 78.2373)
Luminance	0.4607 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C4E1 #E15F42

analogous

#42E1AE #42C4E1 #4275E1

triadic

#42C4E1 #E142C4 #C4E142

tetradic

#42C4E1 #AE42E1 #E15F42 #75E142

square

#42C4E1 #AE42E1 #E15F42 #75E142

split-complementary

#42C4E1 #E14275 #E1AE42

monochromatic

#177B92 #1FA8C6 #42C4E1 #77D4E9 #ACE5F2

Accessibility & contrast

On white

2.06

#42C4E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.21

#42C4E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C4E1

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C4E1	#FFFFFF	#000000	##000000
##42C4E1	1.00	2.06	10.21	10.21
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.21	21.00	1.00	1.00
##000000	10.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0BEE3

Deuteranopia (green-blind)

#9AAEE1

Tritanopia (blue-blind)

#00CFCD

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #42c4e1;
/* rgb */ color: rgb(66, 196, 225);
/* oklch */ color: oklch(76.2% 0.117 215.9);

Tailwind

colors: {
  custom: {
    50: '#8bd6ea',
    500: '#42c4e1',
    950: '#000000',
  },
}

SCSS

$custom: #42c4e1;
$custom-light: #8bd6ea;
$custom-dark: #000000;

JSON

{
  "hex": "#42c4e1",
  "rgb": {
    "r": 66,
    "g": 196,
    "b": 225
  },
  "hsl": {
    "h": 190.943,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.76206,
    "c": 0.11728,
    "h": 215.9
  },
  "luminance": 0.46074
}

Semantic roles & 50–950 ramp

primary

#42C4E1

secondary

#E0AB9F

accent

#5A38EF

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #42C4E1

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

Preview Lab → · Contrast checker → · Palette generator →