#423BA7#423BA7

#423BA7 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.167 H 279.6°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX#423BA7
RGBrgb(66, 59, 167)
HSLhsl(244, 48%, 44%)
HSVhsv(244, 65%, 65%)
CMYKcmyk(60.5%, 64.7%, 0%, 34.5%)
CIE-LABlab(31.98, 35.25, -57.28)
CIE-LCHlch(31.98, 67.26, 301.61°)
OKLaboklab(42.83% 0.0277 -0.1649)
OKLCHoklch(42.83% 0.167 279.6)
XYZxyz(10.7836, 7.0754, 37.3492)
Luminance0.0708 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#423BA7 #A0A73B
analogous
#3B6AA7 #423BA7 #783BA7
triadic
#423BA7 #A7423B #3BA742
tetradic
#423BA7 #A73B6A #A0A73B #3BA778
square
#423BA7 #A73B6A #A0A73B #3BA778
split-complementary
#423BA7 #A7783B #6AA73B
monochromatic
#1E1B4D #302B7A #423BA7 #615AC5 #8D88D5

Accessibility & contrast

On white

8.69
#423BA7 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.42
#423BA7 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BA7
8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##423BA7#FFFFFF#000000##FFFFFF
##423BA71.008.692.428.69
#FFFFFF8.691.0021.001.00
#0000002.4221.001.0021.00
##FFFFFF8.691.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004FAA
Deuteranopia (green-blind)
#0047A5
Tritanopia (blue-blind)
#00566B
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #423ba7;
/* rgb */ color: rgb(66, 59, 167);
/* oklch */ color: oklch(42.8% 0.167 279.6);
Tailwind
colors: {
  custom: {
    50: '#8171c2',
    500: '#423ba7',
    950: '#000000',
  },
}
SCSS
$custom: #423ba7;
$custom-light: #8171c2;
$custom-dark: #000000;
JSON
{
  "hex": "#423ba7",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 243.889,
    "s": 47.788,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42829,
    "c": 0.16718,
    "h": 279.6
  },
  "luminance": 0.07076
}

Semantic roles & 50–950 ramp

primary
#423BA7
secondary
#BBBF7F
accent
#D750CF
background
#F8F6FC
surface
#F0ECF8
border
#CBC7D1
text
#0B0812
muted
#7C7B81

Preview Lab

Preview with #423BA7

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

Preview Lab → · Contrast checker → · Palette generator →

#423BA7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva