#423EA1#423EA1

#423EA1 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.155 H 279.4°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#423EA1
RGB	rgb(66, 62, 161)
HSL	hsl(242, 44%, 44%)
HSV	hsv(242, 61%, 63%)
CMYK	cmyk(59%, 61.5%, 0%, 36.9%)
CIE-LAB	lab(32.20, 31.37, -53.30)
CIE-LCH	lch(32.20, 61.85, 300.48°)
OKLab	oklab(42.84% 0.0253 -0.1531)
OKLCH	oklch(42.84% 0.155 279.4)
XYZ	xyz(10.4004, 7.1760, 34.5484)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.05

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423EA1 #9DA13E

analogous

#3E6BA1 #423EA1 #733EA1

triadic

#423EA1 #A1423E #3EA142

tetradic

#423EA1 #A13E6B #9DA13E #3EA173

square

#423EA1 #A13E6B #9DA13E #3EA173

split-complementary

#423EA1 #A1733E #6BA13E

monochromatic

#1E1C49 #302D75 #423EA1 #605CC0 #8B88D1

Accessibility & contrast

On white

8.62

#423EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#423EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EA1

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EA1	#FFFFFF	#000000	##FFFFFF
##423EA1	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)

#0050A4

Deuteranopia (green-blind)

#00489F

Tritanopia (blue-blind)

#035669

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423ea1;
/* rgb */ color: rgb(66, 62, 161);
/* oklch */ color: oklch(42.8% 0.155 279.4);

Tailwind

colors: {
  custom: {
    50: '#8073be',
    500: '#423ea1',
    950: '#000000',
  },
}

SCSS

$custom: #423ea1;
$custom-light: #8073be;
$custom-dark: #000000;

JSON

{
  "hex": "#423ea1",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 161
  },
  "hsl": {
    "h": 242.424,
    "s": 44.395,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42842,
    "c": 0.15523,
    "h": 279.4
  },
  "luminance": 0.07177
}

Semantic roles & 50–950 ramp

primary

#423EA1

secondary

#B9BC7F

accent

#D454CF

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423EA1

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

Preview Lab → · Contrast checker → · Palette generator →