#423BA3#423BA3

#423BA3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.162 H 280.0°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX#423BA3
RGBrgb(66, 59, 163)
HSLhsl(244, 47%, 44%)
HSVhsv(244, 64%, 64%)
CMYKcmyk(59.5%, 63.8%, 0%, 36.1%)
CIE-LABlab(31.65, 33.93, -55.42)
CIE-LCHlch(31.65, 64.98, 301.47°)
OKLaboklab(42.48% 0.0281 -0.1594)
OKLCHoklch(42.48% 0.162 280)
XYZxyz(10.4195, 6.9298, 35.4318)
Luminance0.0693 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#423BA3 #9CA33B
analogous
#3B68A3 #423BA3 #763BA3
triadic
#423BA3 #A3423B #3BA342
tetradic
#423BA3 #A33B68 #9CA33B #3BA376
square
#423BA3 #A33B68 #9CA33B #3BA376
split-complementary
#423BA3 #A3763B #68A33B
monochromatic
#1E1A49 #302B76 #423BA3 #6058C3 #8B85D3

Accessibility & contrast

On white

8.80
#423BA3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.39
#423BA3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BA3
8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##423BA3#FFFFFF#000000##FFFFFF
##423BA31.008.802.398.80
#FFFFFF8.801.0021.001.00
#0000002.3921.001.0021.00
##FFFFFF8.801.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004EA6
Deuteranopia (green-blind)
#0046A1
Tritanopia (blue-blind)
#005569
Achromatopsia (no color)
#4A4A4A

Design tokens & code

CSS
--color: #423ba3;
/* rgb */ color: rgb(66, 59, 163);
/* oklch */ color: oklch(42.5% 0.162 280.0);
Tailwind
colors: {
  custom: {
    50: '#8171bf',
    500: '#423ba3',
    950: '#000000',
  },
}
SCSS
$custom: #423ba3;
$custom-light: #8171bf;
$custom-dark: #000000;
JSON
{
  "hex": "#423ba3",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 163
  },
  "hsl": {
    "h": 244.038,
    "s": 46.847,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42484,
    "c": 0.16183,
    "h": 280
  },
  "luminance": 0.06931
}

Semantic roles & 50–950 ramp

primary
#423BA3
secondary
#B9BD7D
accent
#D651CE
background
#F8F6FB
surface
#EFECF7
border
#CAC7D0
text
#0B0812
muted
#7C7B81

Preview Lab

Preview with #423BA3

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

Preview Lab → · Contrast checker → · Palette generator →

#423BA3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva