#423CA4#423CA4

#423CA4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.162 H 279.6°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#423CA4
RGB	rgb(66, 60, 164)
HSL	hsl(243, 46%, 44%)
HSV	hsv(243, 63%, 64%)
CMYK	cmyk(59.8%, 63.4%, 0%, 35.7%)
CIE-LAB	lab(31.96, 33.63, -55.50)
CIE-LCH	lch(31.96, 64.90, 301.22°)
OKLab	oklab(42.74% 0.0271 -0.1596)
OKLCH	oklch(42.74% 0.162 279.6)
XYZ	xyz(10.5613, 7.0696, 35.9228)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423CA4 #9EA43C

analogous

#3C6AA4 #423CA4 #763CA4

triadic

#423CA4 #A4423C #3CA442

tetradic

#423CA4 #A43C6A #9EA43C #3CA476

square

#423CA4 #A43C6A #9EA43C #3CA476

split-complementary

#423CA4 #A4763C #6AA43C

monochromatic

#1E1B4A #302C77 #423CA4 #605AC3 #8C87D3

Accessibility & contrast

On white

8.70

#423CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#423CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CA4

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CA4	#FFFFFF	#000000	##FFFFFF
##423CA4	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA7

Deuteranopia (green-blind)

#0047A2

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423ca4;
/* rgb */ color: rgb(66, 60, 164);
/* oklch */ color: oklch(42.7% 0.162 279.6);

Tailwind

colors: {
  custom: {
    50: '#8172c0',
    500: '#423ca4',
    950: '#000000',
  },
}

SCSS

$custom: #423ca4;
$custom-light: #8172c0;
$custom-dark: #000000;

JSON

{
  "hex": "#423ca4",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 164
  },
  "hsl": {
    "h": 243.462,
    "s": 46.429,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42742,
    "c": 0.1619,
    "h": 279.6
  },
  "luminance": 0.0707
}

Semantic roles & 50–950 ramp

primary

#423CA4

secondary

#BABD7E

accent

#D652CE

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423CA4

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

Preview Lab → · Contrast checker → · Palette generator →