#423EA5#423EA5

#423EA5 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.161 H 279.0°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#423EA5
RGB	rgb(66, 62, 165)
HSL	hsl(242, 45%, 45%)
HSV	hsv(242, 62%, 65%)
CMYK	cmyk(60%, 62.4%, 0%, 35.3%)
CIE-LAB	lab(32.52, 32.72, -55.19)
CIE-LCH	lch(32.52, 64.16, 300.66°)
OKLab	oklab(43.18% 0.0251 -0.1587)
OKLCH	oklch(43.18% 0.161 279)
XYZ	xyz(10.7588, 7.3193, 36.4358)
Luminance	0.0732 (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

#423EA5 #A1A53E

analogous

#3E6EA5 #423EA5 #763EA5

triadic

#423EA5 #A5423E #3EA542

tetradic

#423EA5 #A53E6E #A1A53E #3EA576

square

#423EA5 #A53E6E #A1A53E #3EA576

split-complementary

#423EA5 #A5763E #6EA53E

monochromatic

#1E1D4C #302D79 #423EA5 #625EC2 #8D8AD3

Accessibility & contrast

On white

8.52

#423EA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#423EA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EA5

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EA5	#FFFFFF	#000000	##FFFFFF
##423EA5	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A8

Deuteranopia (green-blind)

#0048A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423ea5;
/* rgb */ color: rgb(66, 62, 165);
/* oklch */ color: oklch(43.2% 0.161 279.0);

Tailwind

colors: {
  custom: {
    50: '#8173c1',
    500: '#423ea5',
    950: '#000000',
  },
}

SCSS

$custom: #423ea5;
$custom-light: #8173c1;
$custom-dark: #000000;

JSON

{
  "hex": "#423ea5",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 165
  },
  "hsl": {
    "h": 242.33,
    "s": 45.374,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43176,
    "c": 0.16069,
    "h": 279
  },
  "luminance": 0.0732
}

Semantic roles & 50–950 ramp

primary

#423EA5

secondary

#BBBE81

accent

#D553D0

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423EA5

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

Preview Lab → · Contrast checker → · Palette generator →