#423BA7#423BA7

#423BA7 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.167 H 279.6°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#423BA7
RGB	rgb(66, 59, 167)
HSL	hsl(244, 48%, 44%)
HSV	hsv(244, 65%, 65%)
CMYK	cmyk(60.5%, 64.7%, 0%, 34.5%)
CIE-LAB	lab(31.98, 35.25, -57.28)
CIE-LCH	lch(31.98, 67.26, 301.61°)
OKLab	oklab(42.83% 0.0277 -0.1649)
OKLCH	oklch(42.83% 0.167 279.6)
XYZ	xyz(10.7836, 7.0754, 37.3492)
Luminance	0.0708 (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

#423BA7 #A0A73B

analogous

#3B6AA7 #423BA7 #783BA7

triadic

#423BA7 #A7423B #3BA742

tetradic

#423BA7 #A73B6A #A0A73B #3BA778

square

#423BA7 #A73B6A #A0A73B #3BA778

split-complementary

#423BA7 #A7783B #6AA73B

monochromatic

#1E1B4D #302B7A #423BA7 #615AC5 #8D88D5

Accessibility & contrast

On white

8.69

#423BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#423BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BA7

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BA7	#FFFFFF	#000000	##FFFFFF
##423BA7	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0047A5

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423ba7;
/* rgb */ color: rgb(66, 59, 167);
/* oklch */ color: oklch(42.8% 0.167 279.6);

Tailwind

colors: {
  custom: {
    50: '#8171c2',
    500: '#423ba7',
    950: '#000000',
  },
}

SCSS

$custom: #423ba7;
$custom-light: #8171c2;
$custom-dark: #000000;

JSON

{
  "hex": "#423ba7",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 243.889,
    "s": 47.788,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42829,
    "c": 0.16718,
    "h": 279.6
  },
  "luminance": 0.07076
}

Semantic roles & 50–950 ramp

primary

#423BA7

secondary

#BBBF7F

accent

#D750CF

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423BA7

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

Preview Lab → · Contrast checker → · Palette generator →