#423BA3#423BA3

#423BA3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.162 H 280.0°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#423BA3
RGB	rgb(66, 59, 163)
HSL	hsl(244, 47%, 44%)
HSV	hsv(244, 64%, 64%)
CMYK	cmyk(59.5%, 63.8%, 0%, 36.1%)
CIE-LAB	lab(31.65, 33.93, -55.42)
CIE-LCH	lch(31.65, 64.98, 301.47°)
OKLab	oklab(42.48% 0.0281 -0.1594)
OKLCH	oklch(42.48% 0.162 280)
XYZ	xyz(10.4195, 6.9298, 35.4318)
Luminance	0.0693 (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

#423BA3 #9CA33B

analogous

#3B68A3 #423BA3 #763BA3

triadic

#423BA3 #A3423B #3BA342

tetradic

#423BA3 #A33B68 #9CA33B #3BA376

square

#423BA3 #A33B68 #9CA33B #3BA376

split-complementary

#423BA3 #A3763B #68A33B

monochromatic

#1E1A49 #302B76 #423BA3 #6058C3 #8B85D3

Accessibility & contrast

On white

8.80

#423BA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#423BA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BA3

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BA3	#FFFFFF	#000000	##FFFFFF
##423BA3	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0046A1

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #423ba3;
/* rgb */ color: rgb(66, 59, 163);
/* oklch */ color: oklch(42.5% 0.162 280.0);

Tailwind

colors: {
  custom: {
    50: '#8171bf',
    500: '#423ba3',
    950: '#000000',
  },
}

SCSS

$custom: #423ba3;
$custom-light: #8171bf;
$custom-dark: #000000;

JSON

{
  "hex": "#423ba3",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 163
  },
  "hsl": {
    "h": 244.038,
    "s": 46.847,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42484,
    "c": 0.16183,
    "h": 280
  },
  "luminance": 0.06931
}

Semantic roles & 50–950 ramp

primary

#423BA3

secondary

#B9BD7D

accent

#D651CE

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423BA3

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

Preview Lab → · Contrast checker → · Palette generator →