#423E9D#423E9D

#423E9D is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.150 H 279.8°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#423E9D
RGB	rgb(66, 62, 157)
HSL	hsl(243, 43%, 43%)
HSV	hsv(243, 61%, 62%)
CMYK	cmyk(58%, 60.5%, 0%, 38.4%)
CIE-LAB	lab(31.89, 30.03, -51.39)
CIE-LCH	lch(31.89, 59.52, 300.30°)
OKLab	oklab(42.51% 0.0255 -0.1475)
OKLCH	oklch(42.51% 0.15 279.8)
XYZ	xyz(10.0533, 7.0371, 32.7203)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.62

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423E9D #999D3E

analogous

#3E6A9D #423E9D #713E9D

triadic

#423E9D #9D423E #3E9D42

tetradic

#423E9D #9D3E6A #999D3E #3E9D71

square

#423E9D #9D3E6A #999D3E #3E9D71

split-complementary

#423E9D #9D713E #6A9D3E

monochromatic

#1D1B45 #302D71 #423E9D #5E5ABE #8986CF

Accessibility & contrast

On white

8.72

#423E9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#423E9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423E9D

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423E9D	#FFFFFF	#000000	##FFFFFF
##423E9D	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA0

Deuteranopia (green-blind)

#00479B

Tritanopia (blue-blind)

#0E5567

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423e9d;
/* rgb */ color: rgb(66, 62, 157);
/* oklch */ color: oklch(42.5% 0.150 279.8);

Tailwind

colors: {
  custom: {
    50: '#7f73bb',
    500: '#423e9d',
    950: '#000000',
  },
}

SCSS

$custom: #423e9d;
$custom-light: #7f73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#423e9d",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 157
  },
  "hsl": {
    "h": 242.526,
    "s": 43.379,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42513,
    "c": 0.14971,
    "h": 279.8
  },
  "luminance": 0.07038
}

Semantic roles & 50–950 ramp

primary

#423E9D

secondary

#B7BA7D

accent

#D355CE

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423E9D

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

Preview Lab → · Contrast checker → · Palette generator →