#423EA8#423EA8

#423EA8 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.165 H 278.7°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#423EA8
RGB	rgb(66, 62, 168)
HSL	hsl(242, 46%, 45%)
HSV	hsv(242, 63%, 66%)
CMYK	cmyk(60.7%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(32.77, 33.72, -56.60)
CIE-LCH	lch(32.77, 65.88, 300.79°)
OKLab	oklab(43.43% 0.0249 -0.1628)
OKLCH	oklch(43.43% 0.165 278.7)
XYZ	xyz(11.0350, 7.4298, 37.8908)
Luminance	0.0743 (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

#423EA8 #A4A83E

analogous

#3E6FA8 #423EA8 #773EA8

triadic

#423EA8 #A8423E #3EA842

tetradic

#423EA8 #A83E6F #A4A83E #3EA877

square

#423EA8 #A83E6F #A4A83E #3EA877

split-complementary

#423EA8 #A8773E #6FA83E

monochromatic

#1F1D4F #302E7B #423EA8 #635FC4 #8F8CD5

Accessibility & contrast

On white

8.45

#423EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#423EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EA8

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EA8	#FFFFFF	#000000	##FFFFFF
##423EA8	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AB

Deuteranopia (green-blind)

#0049A6

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #423ea8;
/* rgb */ color: rgb(66, 62, 168);
/* oklch */ color: oklch(43.4% 0.165 278.7);

Tailwind

colors: {
  custom: {
    50: '#8174c3',
    500: '#423ea8',
    950: '#000000',
  },
}

SCSS

$custom: #423ea8;
$custom-light: #8174c3;
$custom-dark: #000000;

JSON

{
  "hex": "#423ea8",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 242.264,
    "s": 46.087,
    "l": 45.098
  },
  "oklch": {
    "l": 0.4343,
    "c": 0.16474,
    "h": 278.7
  },
  "luminance": 0.07431
}

Semantic roles & 50–950 ramp

primary

#423EA8

secondary

#BDBF83

accent

#D652D1

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423EA8

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

Preview Lab → · Contrast checker → · Palette generator →