#42AEC7#42AEC7

#42AEC7 is a light, moderate cyan. Relative luminance 0.356; OKLCH L 69.9% C 0.103 H 216.0°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#42AEC7
RGB	rgb(66, 174, 199)
HSL	hsl(191, 54%, 52%)
HSV	hsv(191, 67%, 78%)
CMYK	cmyk(66.8%, 12.6%, 0%, 22%)
CIE-LAB	lab(66.18, -22.75, -21.76)
CIE-LCH	lch(66.18, 31.48, 223.72°)
OKLab	oklab(69.94% -0.0832 -0.0606)
OKLCH	oklch(69.94% 0.103 216)
XYZ	xyz(27.6873, 35.5508, 59.4246)
Luminance	0.3555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42AEC7 #C75B42

analogous

#42C79E #42AEC7 #426CC7

triadic

#42AEC7 #C742AE #AEC742

tetradic

#42AEC7 #9E42C7 #C75B42 #6CC742

square

#42AEC7 #9E42C7 #C75B42 #6CC742

split-complementary

#42AEC7 #C7426C #C79E42

monochromatic

#215F6E #2F889D #42AEC7 #71C2D5 #A0D6E3

Accessibility & contrast

On white

2.59

#42AEC7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#42AEC7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42AEC7

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42AEC7	#FFFFFF	#000000	##000000
##42AEC7	1.00	2.59	8.11	8.11
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.11	21.00	1.00	1.00
##000000	8.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DA9C8

Deuteranopia (green-blind)

#8A9BC7

Tritanopia (blue-blind)

#00B7B6

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #42aec7;
/* rgb */ color: rgb(66, 174, 199);
/* oklch */ color: oklch(69.9% 0.103 216.0);

Tailwind

colors: {
  custom: {
    50: '#86c6d8',
    500: '#42aec7',
    950: '#000000',
  },
}

SCSS

$custom: #42aec7;
$custom-light: #86c6d8;
$custom-dark: #000000;

JSON

{
  "hex": "#42aec7",
  "rgb": {
    "r": 66,
    "g": 174,
    "b": 199
  },
  "hsl": {
    "h": 191.278,
    "s": 54.286,
    "l": 51.961
  },
  "oklch": {
    "l": 0.69938,
    "c": 0.10294,
    "h": 216
  },
  "luminance": 0.35554
}

Semantic roles & 50–950 ramp

primary

#42AEC7

secondary

#D0A095

accent

#664ADE

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1314

muted

#7D8283

Preview Lab

Preview with #42AEC7

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

Preview Lab → · Contrast checker → · Palette generator →