#423AA8#423AA8

#423AA8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.170 H 279.7°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX#423AA8
RGBrgb(66, 58, 168)
HSLhsl(244, 49%, 44%)
HSVhsv(244, 65%, 66%)
CMYKcmyk(60.7%, 65.5%, 0%, 34.1%)
CIE-LABlab(31.83, 36.20, -58.12)
CIE-LCHlch(31.83, 68.47, 301.91°)
OKLaboklab(42.75% 0.0285 -0.1673)
OKLCHoklch(42.75% 0.17 279.7)
XYZxyz(10.8255, 7.0107, 37.8209)
Luminance0.0701 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#423AA8 #A0A83A
analogous
#3A69A8 #423AA8 #793AA8
triadic
#423AA8 #A8423A #3AA842
tetradic
#423AA8 #A83A69 #A0A83A #3AA879
square
#423AA8 #A83A69 #A0A83A #3AA879
split-complementary
#423AA8 #A8793A #69A83A
monochromatic
#1E1B4D #302A7B #423AA8 #6159C6 #8D87D6

Accessibility & contrast

On white

8.74
#423AA8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.40
#423AA8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423AA8
8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##423AA8#FFFFFF#000000##FFFFFF
##423AA81.008.742.408.74
#FFFFFF8.741.0021.001.00
#0000002.4021.001.0021.00
##FFFFFF8.741.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004FAB
Deuteranopia (green-blind)
#0047A6
Tritanopia (blue-blind)
#00566C
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #423aa8;
/* rgb */ color: rgb(66, 58, 168);
/* oklch */ color: oklch(42.7% 0.170 279.7);
Tailwind
colors: {
  custom: {
    50: '#8271c3',
    500: '#423aa8',
    950: '#000000',
  },
}
SCSS
$custom: #423aa8;
$custom-light: #8271c3;
$custom-dark: #000000;
JSON
{
  "hex": "#423aa8",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 244.364,
    "s": 48.673,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42748,
    "c": 0.16975,
    "h": 279.7
  },
  "luminance": 0.07012
}

Semantic roles & 50–950 ramp

primary
#423AA8
secondary
#BBC07E
accent
#D850CE
background
#F8F6FC
surface
#F0ECF8
border
#CBC7D1
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #423AA8

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

Preview Lab → · Contrast checker → · Palette generator →

#423AA8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva