#42C7E7#42C7E7

#42C7E7 is a light, vivid cyan. Relative luminance 0.478; OKLCH L 77.2% C 0.120 H 217.4°. Best body text is #000000 at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#42C7E7
RGB	rgb(66, 199, 231)
HSL	hsl(192, 77%, 58%)
HSV	hsv(192, 71%, 91%)
CMYK	cmyk(71.4%, 13.9%, 0%, 9.4%)
CIE-LAB	lab(74.68, -25.49, -26.25)
CIE-LCH	lch(74.68, 36.59, 225.84°)
OKLab	oklab(77.15% -0.0956 -0.0732)
OKLCH	oklch(77.15% 0.12 217.4)
XYZ	xyz(37.0879, 47.7703, 82.8517)
Luminance	0.4778 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C7E7 #E76242

analogous

#42E7B4 #42C7E7 #4274E7

triadic

#42C7E7 #E742C7 #C7E742

tetradic

#42C7E7 #B442E7 #E76242 #74E742

square

#42C7E7 #B442E7 #E76242 #74E742

split-complementary

#42C7E7 #E74274 #E7B442

monochromatic

#14819B #1BAED1 #42C7E7 #78D7EE #AFE7F5

Accessibility & contrast

On white

1.99

#42C7E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.56

#42C7E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C7E7

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C7E7	#FFFFFF	#000000	##000000
##42C7E7	1.00	1.99	10.56	10.56
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.56	21.00	1.00	1.00
##000000	10.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C1E9

Deuteranopia (green-blind)

#9BB1E7

Tritanopia (blue-blind)

#00D2D1

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #42c7e7;
/* rgb */ color: rgb(66, 199, 231);
/* oklch */ color: oklch(77.2% 0.120 217.4);

Tailwind

colors: {
  custom: {
    50: '#8cd8ee',
    500: '#42c7e7',
    950: '#000000',
  },
}

SCSS

$custom: #42c7e7;
$custom-light: #8cd8ee;
$custom-dark: #000000;

JSON

{
  "hex": "#42c7e7",
  "rgb": {
    "r": 66,
    "g": 199,
    "b": 231
  },
  "hsl": {
    "h": 191.636,
    "s": 77.465,
    "l": 58.235
  },
  "oklch": {
    "l": 0.77152,
    "c": 0.12043,
    "h": 217.4
  },
  "luminance": 0.47775
}

Semantic roles & 50–950 ramp

primary

#42C7E7

secondary

#E3AEA2

accent

#5934F4

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #42C7E7

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

Preview Lab → · Contrast checker → · Palette generator →