#42ADD6#42ADD6

#42ADD6 is a light, moderate cyan. Relative luminance 0.359; OKLCH L 70.3% C 0.113 H 227.3°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX#42ADD6
RGBrgb(66, 173, 214)
HSLhsl(197, 64%, 55%)
HSVhsv(197, 69%, 84%)
CMYKcmyk(69.2%, 19.2%, 0%, 16.1%)
CIE-LABlab(66.44, -17.50, -29.64)
CIE-LCHlch(66.44, 34.42, 239.44°)
OKLaboklab(70.34% -0.0765 -0.083)
OKLCHoklch(70.34% 0.113 227.3)
XYZxyz(29.3230, 35.8971, 68.9887)
Luminance0.3590 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42ADD6 #D66B42
analogous
#42D6B5 #42ADD6 #4263D6
triadic
#42ADD6 #D642AD #ADD642
tetradic
#42ADD6 #B542D6 #D66B42 #63D642
square
#42ADD6 #B542D6 #D66B42 #63D642
split-complementary
#42ADD6 #D64263 #D6B542
monochromatic
#1C6582 #278DB4 #42ADD6 #74C3E1 #A7D9EC

Accessibility & contrast

On white

2.57
#42ADD6 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.18
#42ADD6 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADD6
8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42ADD6#FFFFFF#000000##000000
##42ADD61.002.578.188.18
#FFFFFF2.571.0021.0021.00
#0000008.1821.001.001.00
##0000008.1821.001.001.00

Color blindness preview

Protanopia (red-blind)
#97AAD8
Deuteranopia (green-blind)
#839BD5
Tritanopia (blue-blind)
#00B9BA
Achromatopsia (no color)
#A2A2A2

Design tokens & code

CSS
--color: #42add6;
/* rgb */ color: rgb(66, 173, 214);
/* oklch */ color: oklch(70.3% 0.113 227.3);
Tailwind
colors: {
  custom: {
    50: '#88c5e2',
    500: '#42add6',
    950: '#000000',
  },
}
SCSS
$custom: #42add6;
$custom-light: #88c5e2;
$custom-dark: #000000;
JSON
{
  "hex": "#42add6",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 214
  },
  "hsl": {
    "h": 196.622,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.70337,
    "c": 0.1129,
    "h": 227.3
  },
  "luminance": 0.359
}

Semantic roles & 50–950 ramp

primary
#42ADD6
secondary
#D9AC9B
accent
#6F40E7
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #42ADD6

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

Preview Lab → · Contrast checker → · Palette generator →

#42ADD6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva