#423FAC#423FAC

#423FAC is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.9% C 0.169 H 278.1°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#423FAC
RGB	rgb(66, 63, 172)
HSL	hsl(242, 46%, 46%)
HSV	hsv(242, 63%, 67%)
CMYK	cmyk(61.6%, 63.4%, 0%, 32.5%)
CIE-LAB	lab(33.33, 34.44, -58.07)
CIE-LCH	lch(33.33, 67.51, 300.67°)
OKLab	oklab(43.95% 0.0238 -0.1671)
OKLCH	oklch(43.95% 0.169 278.1)
XYZ	xyz(11.4683, 7.6910, 39.9019)
Luminance	0.0769 (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

#423FAC #A9AC3F

analogous

#3F72AC #423FAC #783FAC

triadic

#423FAC #AC423F #3FAC42

tetradic

#423FAC #AC3F72 #A9AC3F #3FAC78

square

#423FAC #AC3F72 #A9AC3F #3FAC78

split-complementary

#423FAC #AC783F #72AC3F

monochromatic

#201E52 #312F7F #423FAC #6563C6 #918FD6

Accessibility & contrast

On white

8.27

#423FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#423FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FAC

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FAC	#FFFFFF	#000000	##FFFFFF
##423FAC	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AF

Deuteranopia (green-blind)

#004AAA

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423fac;
/* rgb */ color: rgb(66, 63, 172);
/* oklch */ color: oklch(43.9% 0.169 278.1);

Tailwind

colors: {
  custom: {
    50: '#8274c6',
    500: '#423fac',
    950: '#000000',
  },
}

SCSS

$custom: #423fac;
$custom-light: #8274c6;
$custom-dark: #000000;

JSON

{
  "hex": "#423fac",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 172
  },
  "hsl": {
    "h": 241.651,
    "s": 46.383,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43945,
    "c": 0.16883,
    "h": 278.1
  },
  "luminance": 0.07692
}

Semantic roles & 50–950 ramp

primary

#423FAC

secondary

#C0C186

accent

#D652D2

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423FAC

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

Preview Lab → · Contrast checker → · Palette generator →