#423CA9#423CA9

#423CA9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.169 H 279.1°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#423CA9
RGB	rgb(66, 60, 169)
HSL	hsl(243, 48%, 45%)
HSV	hsv(243, 64%, 66%)
CMYK	cmyk(60.9%, 64.5%, 0%, 33.7%)
CIE-LAB	lab(32.38, 35.30, -57.83)
CIE-LCH	lch(32.38, 67.75, 301.40°)
OKLab	oklab(43.17% 0.0267 -0.1665)
OKLCH	oklch(43.17% 0.169 279.1)
XYZ	xyz(11.0218, 7.2537, 38.3477)
Luminance	0.0726 (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

#423CA9 #A3A93C

analogous

#3C6CA9 #423CA9 #793CA9

triadic

#423CA9 #A9423C #3CA942

tetradic

#423CA9 #A93C6C #A3A93C #3CA979

square

#423CA9 #A93C6C #A3A93C #3CA979

split-complementary

#423CA9 #A9793C #6CA93C

monochromatic

#1F1C4F #302C7C #423CA9 #635DC5 #8E8AD5

Accessibility & contrast

On white

8.57

#423CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#423CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CA9

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CA9	#FFFFFF	#000000	##FFFFFF
##423CA9	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AC

Deuteranopia (green-blind)

#0048A7

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423ca9;
/* rgb */ color: rgb(66, 60, 169);
/* oklch */ color: oklch(43.2% 0.169 279.1);

Tailwind

colors: {
  custom: {
    50: '#8272c3',
    500: '#423ca9',
    950: '#000000',
  },
}

SCSS

$custom: #423ca9;
$custom-light: #8272c3;
$custom-dark: #000000;

JSON

{
  "hex": "#423ca9",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 169
  },
  "hsl": {
    "h": 243.303,
    "s": 47.598,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43172,
    "c": 0.16859,
    "h": 279.1
  },
  "luminance": 0.07255
}

Semantic roles & 50–950 ramp

primary

#423CA9

secondary

#BCC081

accent

#D751D0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423CA9

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

Preview Lab → · Contrast checker → · Palette generator →