#427BD0#427BD0

#427BD0 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.6% C 0.144 H 258.3°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX#427BD0
RGBrgb(66, 123, 208)
HSLhsl(216, 60%, 54%)
HSVhsv(216, 68%, 82%)
CMYKcmyk(68.3%, 40.9%, 0%, 18.4%)
CIE-LABlab(51.70, 9.08, -49.41)
CIE-LCHlch(51.70, 50.24, 280.41°)
OKLaboklab(58.62% -0.0292 -0.1409)
OKLCHoklch(58.62% 0.144 258.3)
XYZxyz(20.7108, 19.8761, 62.4073)
Luminance0.1988 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#427BD0 #D09742
analogous
#42C2D0 #427BD0 #5042D0
triadic
#427BD0 #D0427B #7BD042
tetradic
#427BD0 #D042C2 #D09742 #42D050
square
#427BD0 #D042C2 #D09742 #42D050
split-complementary
#427BD0 #D05042 #C2D042
monochromatic
#1E4379 #2A5EAA #427BD0 #739DDC #A4BFE8

Accessibility & contrast

On white

4.22
#427BD0 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.98
#427BD0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BD0
4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##427BD0#FFFFFF#000000##000000
##427BD01.004.224.984.98
#FFFFFF4.221.0021.0021.00
#0000004.9821.001.001.00
##0000004.9821.001.001.00

Color blindness preview

Protanopia (red-blind)
#5382D3
Deuteranopia (green-blind)
#3D75CE
Tritanopia (blue-blind)
#008F9B
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #427bd0;
/* rgb */ color: rgb(66, 123, 208);
/* oklch */ color: oklch(58.6% 0.144 258.3);
Tailwind
colors: {
  custom: {
    50: '#86a0df',
    500: '#427bd0',
    950: '#000000',
  },
}
SCSS
$custom: #427bd0;
$custom-light: #86a0df;
$custom-dark: #000000;
JSON
{
  "hex": "#427bd0",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 208
  },
  "hsl": {
    "h": 215.915,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58616,
    "c": 0.14394,
    "h": 258.3
  },
  "luminance": 0.19878
}

Semantic roles & 50–950 ramp

primary
#427BD0
secondary
#D5BD99
accent
#A444E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #427BD0

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

Preview Lab → · Contrast checker → · Palette generator →

#427BD0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva