#42A7BE#42A7BE

#42A7BE is a light, moderate cyan. Relative luminance 0.325; OKLCH L 67.9% C 0.098 H 215.5°. Best body text is #000000 at 7.50:1 contrast (WCAG AA passes).

Color values

HEX#42A7BE
RGBrgb(66, 167, 190)
HSLhsl(191, 49%, 50%)
HSVhsv(191, 65%, 75%)
CMYKcmyk(65.3%, 12.1%, 0%, 25.5%)
CIE-LABlab(63.76, -21.93, -20.44)
CIE-LCHlch(63.76, 29.98, 222.98°)
OKLaboklab(67.89% -0.0796 -0.0568)
OKLCHoklch(67.89% 0.098 215.5)
XYZxyz(25.3559, 32.5107, 53.6441)
Luminance0.3251 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42A7BE #BE5942
analogous
#42BE97 #42A7BE #4269BE
triadic
#42A7BE #BE42A7 #A7BE42
tetradic
#42A7BE #9742BE #BE5942 #69BE42
square
#42A7BE #9742BE #BE5942 #69BE42
split-complementary
#42A7BE #BE4269 #BE9742
monochromatic
#225763 #327F91 #42A7BE #70BCCE #9DD1DD

Accessibility & contrast

On white

2.80
#42A7BE on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.50
#42A7BE on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A7BE
7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42A7BE#FFFFFF#000000##000000
##42A7BE1.002.807.507.50
#FFFFFF2.801.0021.0021.00
#0000007.5021.001.001.00
##0000007.5021.001.001.00

Color blindness preview

Protanopia (red-blind)
#97A2BF
Deuteranopia (green-blind)
#8595BE
Tritanopia (blue-blind)
#00B0AE
Achromatopsia (no color)
#9A9A9A

Design tokens & code

CSS
--color: #42a7be;
/* rgb */ color: rgb(66, 167, 190);
/* oklch */ color: oklch(67.9% 0.098 215.5);
Tailwind
colors: {
  custom: {
    50: '#85c1d1',
    500: '#42a7be',
    950: '#000000',
  },
}
SCSS
$custom: #42a7be;
$custom-light: #85c1d1;
$custom-dark: #000000;
JSON
{
  "hex": "#42a7be",
  "rgb": {
    "r": 66,
    "g": 167,
    "b": 190
  },
  "hsl": {
    "h": 191.129,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.67893,
    "c": 0.09779,
    "h": 215.5
  },
  "luminance": 0.32513
}

Semantic roles & 50–950 ramp

primary
#42A7BE
secondary
#CA9C92
accent
#694FD8
background
#F8FBFC
surface
#F0F7F9
border
#CBD0D2
text
#0C1214
muted
#7D8182

Preview Lab

Preview with #42A7BE

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

Preview Lab → · Contrast checker → · Palette generator →

#42A7BE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva