#427FCC#427FCC

#427FCC is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.3% C 0.134 H 255.4°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX#427FCC
RGBrgb(66, 127, 204)
HSLhsl(213, 58%, 53%)
HSVhsv(213, 68%, 80%)
CMYKcmyk(67.6%, 37.7%, 0%, 20%)
CIE-LABlab(52.61, 5.23, -45.68)
CIE-LCHlch(52.61, 45.98, 276.53°)
OKLaboklab(59.26% -0.034 -0.13)
OKLCHoklch(59.26% 0.134 255.4)
XYZxyz(20.7312, 20.6945, 60.0169)
Luminance0.2070 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#427FCC #CC8F42
analogous
#42C4CC #427FCC #4A42CC
triadic
#427FCC #CC427F #7FCC42
tetradic
#427FCC #CC42C4 #CC8F42 #42CC4A
square
#427FCC #CC42C4 #CC8F42 #42CC4A
split-complementary
#427FCC #CC4A42 #C4CC42
monochromatic
#1F4574 #2C61A4 #427FCC #72A0D9 #A2C0E6

Accessibility & contrast

On white

4.09
#427FCC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.14
#427FCC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FCC
5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##427FCC#FFFFFF#000000##000000
##427FCC1.004.095.145.14
#FFFFFF4.091.0021.0021.00
#0000005.1421.001.001.00
##0000005.1421.001.001.00

Color blindness preview

Protanopia (red-blind)
#5C85CF
Deuteranopia (green-blind)
#4878CA
Tritanopia (blue-blind)
#00919C
Achromatopsia (no color)
#7E7E7E

Design tokens & code

CSS
--color: #427fcc;
/* rgb */ color: rgb(66, 127, 204);
/* oklch */ color: oklch(59.3% 0.134 255.4);
Tailwind
colors: {
  custom: {
    50: '#85a3dc',
    500: '#427fcc',
    950: '#000000',
  },
}
SCSS
$custom: #427fcc;
$custom-light: #85a3dc;
$custom-dark: #000000;
JSON
{
  "hex": "#427fcc",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 204
  },
  "hsl": {
    "h": 213.478,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.59258,
    "c": 0.13433,
    "h": 255.4
  },
  "luminance": 0.20697
}

Semantic roles & 50–950 ramp

primary
#427FCC
secondary
#D3B897
accent
#9D47E1
background
#F8FAFD
surface
#F0F3FB
border
#CBCDD4
text
#0C0F15
muted
#7D7F83

Preview Lab

Preview with #427FCC

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

Preview Lab → · Contrast checker → · Palette generator →

#427FCC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva