#423CB4#423CB4

#423CB4 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.1% C 0.183 H 278.0°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#423CB4
RGB	rgb(66, 60, 180)
HSL	hsl(243, 50%, 47%)
HSV	hsv(243, 67%, 71%)
CMYK	cmyk(63.3%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(33.32, 38.94, -62.85)
CIE-LCH	lch(33.32, 73.94, 301.78°)
OKLab	oklab(44.15% 0.0256 -0.1812)
OKLCH	oklch(44.15% 0.183 278)
XYZ	xyz(12.0982, 7.6843, 44.0168)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.31

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423CB4 #AEB43C

analogous

#3C72B4 #423CB4 #7E3CB4

triadic

#423CB4 #B4423C #3CB442

tetradic

#423CB4 #B43C72 #AEB43C #3CB47E

square

#423CB4 #B43C72 #AEB43C #3CB47E

split-complementary

#423CB4 #B47E3C #72B43C

monochromatic

#201D58 #312D86 #423CB4 #6862CB #9490DA

Accessibility & contrast

On white

8.28

#423CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#423CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CB4

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CB4	#FFFFFF	#000000	##FFFFFF
##423CB4	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423cb4;
/* rgb */ color: rgb(66, 60, 180);
/* oklch */ color: oklch(44.1% 0.183 278.0);

Tailwind

colors: {
  custom: {
    50: '#8472cb',
    500: '#423cb4',
    950: '#000000',
  },
}

SCSS

$custom: #423cb4;
$custom-light: #8472cb;
$custom-dark: #000000;

JSON

{
  "hex": "#423cb4",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 243,
    "s": 50,
    "l": 47.059
  },
  "oklch": {
    "l": 0.44145,
    "c": 0.18299,
    "h": 278
  },
  "luminance": 0.07685
}

Semantic roles & 50–950 ramp

primary

#423CB4

secondary

#C2C587

accent

#DA4ED3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423CB4

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

Preview Lab → · Contrast checker → · Palette generator →