#423A9D#423A9D

#423A9D is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.155 H 281.0°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#423A9D
RGB	rgb(66, 58, 157)
HSL	hsl(245, 46%, 42%)
HSV	hsv(245, 63%, 62%)
CMYK	cmyk(58%, 63.1%, 0%, 38.4%)
CIE-LAB	lab(30.92, 32.56, -52.97)
CIE-LCH	lch(30.92, 62.18, 301.58°)
OKLab	oklab(41.8% 0.0295 -0.1522)
OKLCH	oklch(41.8% 0.155 281)
XYZ	xyz(9.8437, 6.6180, 32.6504)
Luminance	0.0662 (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

#423A9D #959D3A

analogous

#3A649D #423A9D #733A9D

triadic

#423A9D #9D423A #3A9D42

tetradic

#423A9D #9D3A64 #959D3A #3A9D73

square

#423A9D #9D3A64 #959D3A #3A9D73

split-complementary

#423A9D #9D733A #649D3A

monochromatic

#1C1944 #2F2970 #423A9D #5D54C0 #8781D0

Accessibility & contrast

On white

9.04

#423A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#423A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423A9D

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423A9D	#FFFFFF	#000000	##FFFFFF
##423A9D	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA0

Deuteranopia (green-blind)

#00459B

Tritanopia (blue-blind)

#0F5266

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #423a9d;
/* rgb */ color: rgb(66, 58, 157);
/* oklch */ color: oklch(41.8% 0.155 281.0);

Tailwind

colors: {
  custom: {
    50: '#8071bb',
    500: '#423a9d',
    950: '#000000',
  },
}

SCSS

$custom: #423a9d;
$custom-light: #8071bb;
$custom-dark: #000000;

JSON

{
  "hex": "#423a9d",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 157
  },
  "hsl": {
    "h": 244.848,
    "s": 46.047,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41801,
    "c": 0.15502,
    "h": 281
  },
  "luminance": 0.06619
}

Semantic roles & 50–950 ramp

primary

#423A9D

secondary

#B5BA79

accent

#D652CB

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #423A9D

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

Preview Lab → · Contrast checker → · Palette generator →