#423DA4#423DA4

#423DA4 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.161 H 279.4°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#423DA4
RGB	rgb(66, 61, 164)
HSL	hsl(243, 46%, 44%)
HSV	hsv(243, 63%, 64%)
CMYK	cmyk(59.8%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(32.20, 33.01, -55.11)
CIE-LCH	lch(32.20, 64.24, 300.92°)
OKLab	oklab(42.92% 0.0261 -0.1585)
OKLCH	oklch(42.92% 0.161 279.4)
XYZ	xyz(10.6142, 7.1753, 35.9404)
Luminance	0.0718 (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

#423DA4 #9FA43D

analogous

#3D6CA4 #423DA4 #763DA4

triadic

#423DA4 #A4423D #3DA442

tetradic

#423DA4 #A43D6C #9FA43D #3DA476

square

#423DA4 #A43D6C #9FA43D #3DA476

split-complementary

#423DA4 #A4763D #6CA43D

monochromatic

#1E1C4B #302C77 #423DA4 #615CC2 #8C88D3

Accessibility & contrast

On white

8.62

#423DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#423DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DA4

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DA4	#FFFFFF	#000000	##FFFFFF
##423DA4	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A7

Deuteranopia (green-blind)

#0048A2

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423da4;
/* rgb */ color: rgb(66, 61, 164);
/* oklch */ color: oklch(42.9% 0.161 279.4);

Tailwind

colors: {
  custom: {
    50: '#8173c0',
    500: '#423da4',
    950: '#000000',
  },
}

SCSS

$custom: #423da4;
$custom-light: #8173c0;
$custom-dark: #000000;

JSON

{
  "hex": "#423da4",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 242.913,
    "s": 45.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42916,
    "c": 0.16062,
    "h": 279.4
  },
  "luminance": 0.07176
}

Semantic roles & 50–950 ramp

primary

#423DA4

secondary

#BABD7F

accent

#D552CF

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423DA4

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

Preview Lab → · Contrast checker → · Palette generator →