#42B4D3#42B4D3

#42B4D3 is a light, moderate cyan. Relative luminance 0.385; OKLCH L 71.9% C 0.110 H 219.5°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX#42B4D3
RGBrgb(66, 180, 211)
HSLhsl(193, 62%, 54%)
HSVhsv(193, 69%, 83%)
CMYKcmyk(68.7%, 14.7%, 0%, 17.3%)
CIE-LABlab(68.39, -22.10, -24.99)
CIE-LCHlch(68.39, 33.36, 228.52°)
OKLaboklab(71.86% -0.0846 -0.0697)
OKLCHoklch(71.86% 0.11 219.5)
XYZxyz(30.3210, 38.5005, 67.4487)
Luminance0.3850 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42B4D3 #D36142
analogous
#42D3AA #42B4D3 #426BD3
triadic
#42B4D3 #D342B4 #B4D342
tetradic
#42B4D3 #AA42D3 #D36142 #6BD342
square
#42B4D3 #AA42D3 #D36142 #6BD342
split-complementary
#42B4D3 #D3426B #D3AA42
monochromatic
#1D697D #2992AF #42B4D3 #74C8DF #A5DBEA

Accessibility & contrast

On white

2.41
#42B4D3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.70
#42B4D3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B4D3
8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42B4D3#FFFFFF#000000##000000
##42B4D31.002.418.708.70
#FFFFFF2.411.0021.0021.00
#0000008.7021.001.001.00
##0000008.7021.001.001.00

Color blindness preview

Protanopia (red-blind)
#A1AFD5
Deuteranopia (green-blind)
#8DA0D3
Tritanopia (blue-blind)
#00BEBE
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #42b4d3;
/* rgb */ color: rgb(66, 180, 211);
/* oklch */ color: oklch(71.9% 0.110 219.5);
Tailwind
colors: {
  custom: {
    50: '#88cae0',
    500: '#42b4d3',
    950: '#000000',
  },
}
SCSS
$custom: #42b4d3;
$custom-light: #88cae0;
$custom-dark: #000000;
JSON
{
  "hex": "#42b4d3",
  "rgb": {
    "r": 66,
    "g": 180,
    "b": 211
  },
  "hsl": {
    "h": 192.828,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.71859,
    "c": 0.10966,
    "h": 219.5
  },
  "luminance": 0.38504
}

Semantic roles & 50–950 ramp

primary
#42B4D3
secondary
#D7A79A
accent
#6542E5
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #42B4D3

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

Preview Lab → · Contrast checker → · Palette generator →

#42B4D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva