#423CA8#423CA8

#423CA8 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.167 H 279.2°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#423CA8
RGB	rgb(66, 60, 168)
HSL	hsl(243, 47%, 45%)
HSV	hsv(243, 64%, 66%)
CMYK	cmyk(60.7%, 64.3%, 0%, 34.1%)
CIE-LAB	lab(32.29, 34.97, -57.37)
CIE-LCH	lch(32.29, 67.18, 301.36°)
OKLab	oklab(43.09% 0.0268 -0.1651)
OKLCH	oklch(43.09% 0.167 279.2)
XYZ	xyz(10.9283, 7.2163, 37.8552)
Luminance	0.0722 (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

#423CA8 #A2A83C

analogous

#3C6CA8 #423CA8 #783CA8

triadic

#423CA8 #A8423C #3CA842

tetradic

#423CA8 #A83C6C #A2A83C #3CA878

square

#423CA8 #A83C6C #A2A83C #3CA878

split-complementary

#423CA8 #A8783C #6CA83C

monochromatic

#1F1C4E #302C7B #423CA8 #625CC5 #8E89D5

Accessibility & contrast

On white

8.59

#423CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#423CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CA8

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CA8	#FFFFFF	#000000	##FFFFFF
##423CA8	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0048A6

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423ca8;
/* rgb */ color: rgb(66, 60, 168);
/* oklch */ color: oklch(43.1% 0.167 279.2);

Tailwind

colors: {
  custom: {
    50: '#8172c3',
    500: '#423ca8',
    950: '#000000',
  },
}

SCSS

$custom: #423ca8;
$custom-light: #8172c3;
$custom-dark: #000000;

JSON

{
  "hex": "#423ca8",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 168
  },
  "hsl": {
    "h": 243.333,
    "s": 47.368,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43085,
    "c": 0.16725,
    "h": 279.2
  },
  "luminance": 0.07217
}

Semantic roles & 50–950 ramp

primary

#423CA8

secondary

#BCBF80

accent

#D751D0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423CA8

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

Preview Lab → · Contrast checker → · Palette generator →