#427BA3#427BA3

#427BA3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.087 H 241.2°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX#427BA3
RGBrgb(66, 123, 163)
HSLhsl(205, 42%, 45%)
HSVhsv(205, 60%, 64%)
CMYKcmyk(59.5%, 24.5%, 0%, 36.1%)
CIE-LABlab(49.46, -6.42, -27.05)
CIE-LCHlch(49.46, 27.80, 256.65°)
OKLaboklab(56.13% -0.0417 -0.0758)
OKLCHoklch(56.13% 0.087 241.2)
XYZxyz(15.9381, 17.9670, 37.2713)
Luminance0.1797 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#427BA3 #A36A42
analogous
#42A39A #427BA3 #424BA3
triadic
#427BA3 #A3427B #7BA342
tetradic
#427BA3 #9A42A3 #A36A42 #4BA342
square
#427BA3 #9A42A3 #A36A42 #4BA342
split-complementary
#427BA3 #A3424B #A39A42
monochromatic
#1F394C #305A77 #427BA3 #6399C0 #8EB6D1

Accessibility & contrast

On white

4.57
#427BA3 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.59
#427BA3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BA3
4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##427BA3#FFFFFF#000000##000000
##427BA31.004.574.594.59
#FFFFFF4.571.0021.0021.00
#0000004.5921.001.001.00
##0000004.5921.001.001.00

Color blindness preview

Protanopia (red-blind)
#697BA5
Deuteranopia (green-blind)
#5C71A2
Tritanopia (blue-blind)
#008589
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #427ba3;
/* rgb */ color: rgb(66, 123, 163);
/* oklch */ color: oklch(56.1% 0.087 241.2);
Tailwind
colors: {
  custom: {
    50: '#7fa1be',
    500: '#427ba3',
    950: '#000000',
  },
}
SCSS
$custom: #427ba3;
$custom-light: #7fa1be;
$custom-dark: #000000;
JSON
{
  "hex": "#427ba3",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 163
  },
  "hsl": {
    "h": 204.742,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56128,
    "c": 0.08653,
    "h": 241.2
  },
  "luminance": 0.17969
}

Semantic roles & 50–950 ramp

primary
#427BA3
secondary
#BC9B84
accent
#8956D2
background
#F8F9FB
surface
#EFF2F6
border
#CACCD0
text
#0B0E12
muted
#7C7E81

Preview Lab

Preview with #427BA3

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

Preview Lab → · Contrast checker → · Palette generator →

#427BA3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva