#423AA5#423AA5

#423AA5 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.166 H 280.0°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#423AA5
RGB	rgb(66, 58, 165)
HSL	hsl(244, 48%, 44%)
HSV	hsv(244, 65%, 65%)
CMYK	cmyk(60%, 64.8%, 0%, 35.3%)
CIE-LAB	lab(31.58, 35.21, -56.73)
CIE-LCH	lch(31.58, 66.77, 301.82°)
OKLab	oklab(42.49% 0.0288 -0.1632)
OKLCH	oklch(42.49% 0.166 280)
XYZ	xyz(10.5492, 6.9002, 36.3660)
Luminance	0.0690 (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

#423AA5 #9DA53A

analogous

#3A67A5 #423AA5 #773AA5

triadic

#423AA5 #A5423A #3AA542

tetradic

#423AA5 #A53A67 #9DA53A #3AA577

square

#423AA5 #A53A67 #9DA53A #3AA577

split-complementary

#423AA5 #A5773A #67A53A

monochromatic

#1E1A4A #302A78 #423AA5 #6058C4 #8B85D4

Accessibility & contrast

On white

8.82

#423AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#423AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423AA5

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423AA5	#FFFFFF	#000000	##FFFFFF
##423AA5	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA8

Deuteranopia (green-blind)

#0046A3

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #423aa5;
/* rgb */ color: rgb(66, 58, 165);
/* oklch */ color: oklch(42.5% 0.166 280.0);

Tailwind

colors: {
  custom: {
    50: '#8171c1',
    500: '#423aa5',
    950: '#000000',
  },
}

SCSS

$custom: #423aa5;
$custom-light: #8171c1;
$custom-dark: #000000;

JSON

{
  "hex": "#423aa5",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 165
  },
  "hsl": {
    "h": 244.486,
    "s": 47.982,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42486,
    "c": 0.16578,
    "h": 280
  },
  "luminance": 0.06901
}

Semantic roles & 50–950 ramp

primary

#423AA5

secondary

#B9BE7D

accent

#D850CD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #423AA5

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

Preview Lab → · Contrast checker → · Palette generator →