#423BAB#423BAB

#423BAB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.2% C 0.172 H 279.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#423BAB
RGB	rgb(66, 59, 171)
HSL	hsl(244, 49%, 45%)
HSV	hsv(244, 65%, 67%)
CMYK	cmyk(61.4%, 65.5%, 0%, 32.9%)
CIE-LAB	lab(32.32, 36.58, -59.13)
CIE-LCH	lch(32.32, 69.53, 301.74°)
OKLab	oklab(43.18% 0.0274 -0.1703)
OKLCH	oklch(43.18% 0.172 279.1)
XYZ	xyz(11.1591, 7.2256, 39.3268)
Luminance	0.0723 (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

#423BAB #A4AB3B

analogous

#3B6CAB #423BAB #7A3BAB

triadic

#423BAB #AB423B #3BAB42

tetradic

#423BAB #AB3B6C #A4AB3B #3BAB7A

square

#423BAB #AB3B6C #A4AB3B #3BAB7A

split-complementary

#423BAB #AB7A3B #6CAB3B

monochromatic

#1F1C50 #302B7D #423BAB #635CC7 #8F8AD7

Accessibility & contrast

On white

8.59

#423BAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#423BAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BAB

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BAB	#FFFFFF	#000000	##FFFFFF
##423BAB	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AF

Deuteranopia (green-blind)

#0048A9

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423bab;
/* rgb */ color: rgb(66, 59, 171);
/* oklch */ color: oklch(43.2% 0.172 279.1);

Tailwind

colors: {
  custom: {
    50: '#8272c5',
    500: '#423bab',
    950: '#000000',
  },
}

SCSS

$custom: #423bab;
$custom-light: #8272c5;
$custom-dark: #000000;

JSON

{
  "hex": "#423bab",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 171
  },
  "hsl": {
    "h": 243.75,
    "s": 48.696,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43179,
    "c": 0.17246,
    "h": 279.1
  },
  "luminance": 0.07226
}

Semantic roles & 50–950 ramp

primary

#423BAB

secondary

#BDC181

accent

#D850D0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423BAB

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

Preview Lab → · Contrast checker → · Palette generator →