#423EB4#423EB4

#423EB4 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.5% C 0.181 H 277.6°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#423EB4
RGB	rgb(66, 62, 180)
HSL	hsl(242, 49%, 47%)
HSV	hsv(242, 66%, 71%)
CMYK	cmyk(63.3%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(33.77, 37.73, -62.11)
CIE-LCH	lch(33.77, 72.67, 301.28°)
OKLab	oklab(44.47% 0.0239 -0.179)
OKLCH	oklch(44.47% 0.181 277.6)
XYZ	xyz(12.2049, 7.8978, 44.0524)
Luminance	0.0790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.07

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423EB4 #B0B43E

analogous

#3E75B4 #423EB4 #7D3EB4

triadic

#423EB4 #B4423E #3EB442

tetradic

#423EB4 #B43E75 #B0B43E #3EB47D

square

#423EB4 #B43E75 #B0B43E #3EB47D

split-complementary

#423EB4 #B47D3E #75B43E

monochromatic

#211F59 #312E86 #423EB4 #6965CA #9593DA

Accessibility & contrast

On white

8.14

#423EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#423EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EB4

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EB4	#FFFFFF	#000000	##FFFFFF
##423EB4	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423eb4;
/* rgb */ color: rgb(66, 62, 180);
/* oklch */ color: oklch(44.5% 0.181 277.6);

Tailwind

colors: {
  custom: {
    50: '#8374cb',
    500: '#423eb4',
    950: '#000000',
  },
}

SCSS

$custom: #423eb4;
$custom-light: #8374cb;
$custom-dark: #000000;

JSON

{
  "hex": "#423eb4",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 242.034,
    "s": 48.76,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44473,
    "c": 0.18062,
    "h": 277.6
  },
  "luminance": 0.07899
}

Semantic roles & 50–950 ramp

primary

#423EB4

secondary

#C3C589

accent

#D84FD4

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423EB4

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

Preview Lab → · Contrast checker → · Palette generator →