#423DA3#423DA3

#423DA3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.159 H 279.5°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#423DA3
RGB	rgb(66, 61, 163)
HSL	hsl(243, 46%, 44%)
HSV	hsv(243, 63%, 64%)
CMYK	cmyk(59.5%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(32.12, 32.68, -54.64)
CIE-LCH	lch(32.12, 63.67, 300.88°)
OKLab	oklab(42.83% 0.0262 -0.1571)
OKLCH	oklch(42.83% 0.159 279.5)
XYZ	xyz(10.5243, 7.1393, 35.4667)
Luminance	0.0714 (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

#423DA3 #9EA33D

analogous

#3D6BA3 #423DA3 #753DA3

triadic

#423DA3 #A3423D #3DA342

tetradic

#423DA3 #A33D6B #9EA33D #3DA375

square

#423DA3 #A33D6B #9EA33D #3DA375

split-complementary

#423DA3 #A3753D #6BA33D

monochromatic

#1E1C4A #302C76 #423DA3 #605BC2 #8C88D2

Accessibility & contrast

On white

8.65

#423DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#423DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DA3

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DA3	#FFFFFF	#000000	##FFFFFF
##423DA3	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A6

Deuteranopia (green-blind)

#0048A1

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423da3;
/* rgb */ color: rgb(66, 61, 163);
/* oklch */ color: oklch(42.8% 0.159 279.5);

Tailwind

colors: {
  custom: {
    50: '#8073bf',
    500: '#423da3',
    950: '#000000',
  },
}

SCSS

$custom: #423da3;
$custom-light: #8073bf;
$custom-dark: #000000;

JSON

{
  "hex": "#423da3",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 242.941,
    "s": 45.536,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42832,
    "c": 0.15926,
    "h": 279.5
  },
  "luminance": 0.0714
}

Semantic roles & 50–950 ramp

primary

#423DA3

secondary

#BABD7F

accent

#D553CF

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423DA3

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

Preview Lab → · Contrast checker → · Palette generator →