#42C2E7#42C2E7

#42C2E7 is a light, vivid cyan. Relative luminance 0.455; OKLCH L 76.0% C 0.121 H 221.2°. Best body text is #000000 at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#42C2E7
RGB	rgb(66, 194, 231)
HSL	hsl(193, 77%, 58%)
HSV	hsv(193, 71%, 91%)
CMYK	cmyk(71.4%, 16%, 0%, 9.4%)
CIE-LAB	lab(73.22, -22.97, -28.48)
CIE-LCH	lch(73.22, 36.59, 231.11°)
OKLab	oklab(75.98% -0.0908 -0.0796)
OKLCH	oklch(75.98% 0.121 221.2)
XYZ	xyz(35.9564, 45.5072, 82.4746)
Luminance	0.4551 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C2E7 #E76742

analogous

#42E7BA #42C2E7 #426FE7

triadic

#42C2E7 #E742C2 #C2E742

tetradic

#42C2E7 #BA42E7 #E76742 #6FE742

square

#42C2E7 #BA42E7 #E76742 #6FE742

split-complementary

#42C2E7 #E7426F #E7BA42

monochromatic

#147D9B #1BA8D1 #42C2E7 #78D4EE #AFE5F5

Accessibility & contrast

On white

2.08

#42C2E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.10

#42C2E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C2E7

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C2E7	#FFFFFF	#000000	##000000
##42C2E7	1.00	2.08	10.10	10.10
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.10	21.00	1.00	1.00
##000000	10.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACBDE9

Deuteranopia (green-blind)

#95ADE7

Tritanopia (blue-blind)

#00CECE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #42c2e7;
/* rgb */ color: rgb(66, 194, 231);
/* oklch */ color: oklch(76.0% 0.121 221.2);

Tailwind

colors: {
  custom: {
    50: '#8bd4ee',
    500: '#42c2e7',
    950: '#000000',
  },
}

SCSS

$custom: #42c2e7;
$custom-light: #8bd4ee;
$custom-dark: #000000;

JSON

{
  "hex": "#42c2e7",
  "rgb": {
    "r": 66,
    "g": 194,
    "b": 231
  },
  "hsl": {
    "h": 193.455,
    "s": 77.465,
    "l": 58.235
  },
  "oklch": {
    "l": 0.75984,
    "c": 0.12074,
    "h": 221.2
  },
  "luminance": 0.45511
}

Semantic roles & 50–950 ramp

primary

#42C2E7

secondary

#E3B0A2

accent

#5F34F4

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #42C2E7

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

Preview Lab → · Contrast checker → · Palette generator →