#42BFDB#42BFDB

#42BFDB is a light, moderate cyan. Relative luminance 0.435; OKLCH L 74.8% C 0.114 H 215.9°. Best body text is #000000 at 9.71:1 contrast (WCAG AA passes).

Color values

HEX#42BFDB
RGBrgb(66, 191, 219)
HSLhsl(191, 68%, 56%)
HSVhsv(191, 70%, 86%)
CMYKcmyk(69.9%, 12.8%, 0%, 14.1%)
CIE-LABlab(71.91, -25.19, -23.97)
CIE-LCHlch(71.91, 34.78, 223.58°)
OKLaboklab(74.79% -0.0924 -0.0668)
OKLCHoklch(74.79% 0.114 215.9)
XYZxyz(33.6584, 43.5305, 73.6324)
Luminance0.4353 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42BFDB #DB5E42
analogous
#42DBAA #42BFDB #4272DB
triadic
#42BFDB #DB42BF #BFDB42
tetradic
#42BFDB #AA42DB #DB5E42 #72DB42
square
#42BFDB #AA42DB #DB5E42 #72DB42
split-complementary
#42BFDB #DB4272 #DBAA42
monochromatic
#1A7489 #24A0BC #42BFDB #75D0E5 #A9E2EF

Accessibility & contrast

On white

2.16
#42BFDB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.71
#42BFDB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BFDB
9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42BFDB#FFFFFF#000000##000000
##42BFDB1.002.169.719.71
#FFFFFF2.161.0021.0021.00
#0000009.7121.001.001.00
##0000009.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#ACB9DD
Deuteranopia (green-blind)
#96A9DB
Tritanopia (blue-blind)
#00C9C8
Achromatopsia (no color)
#B0B0B0

Design tokens & code

CSS
--color: #42bfdb;
/* rgb */ color: rgb(66, 191, 219);
/* oklch */ color: oklch(74.8% 0.114 215.9);
Tailwind
colors: {
  custom: {
    50: '#8ad2e6',
    500: '#42bfdb',
    950: '#000000',
  },
}
SCSS
$custom: #42bfdb;
$custom-light: #8ad2e6;
$custom-dark: #000000;
JSON
{
  "hex": "#42bfdb",
  "rgb": {
    "r": 66,
    "g": 191,
    "b": 219
  },
  "hsl": {
    "h": 190.98,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.74787,
    "c": 0.11406,
    "h": 215.9
  },
  "luminance": 0.43534
}

Semantic roles & 50–950 ramp

primary
#42BFDB
secondary
#DCA89D
accent
#5D3DEB
background
#F9FCFE
surface
#F1F9FC
border
#CBD2D5
text
#0D1416
muted
#7E8284

Preview Lab

Preview with #42BFDB

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

Preview Lab → · Contrast checker → · Palette generator →

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