#423CA5#423CA5

#423CA5 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.163 H 279.5°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#423CA5
RGB	rgb(66, 60, 165)
HSL	hsl(243, 47%, 44%)
HSV	hsv(243, 64%, 65%)
CMYK	cmyk(60%, 63.6%, 0%, 35.3%)
CIE-LAB	lab(32.05, 33.97, -55.97)
CIE-LCH	lch(32.05, 65.47, 301.25°)
OKLab	oklab(42.83% 0.027 -0.161)
OKLCH	oklch(42.83% 0.163 279.5)
XYZ	xyz(10.6520, 7.1058, 36.4003)
Luminance	0.0711 (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

#423CA5 #9FA53C

analogous

#3C6BA5 #423CA5 #773CA5

triadic

#423CA5 #A5423C #3CA542

tetradic

#423CA5 #A53C6B #9FA53C #3CA577

square

#423CA5 #A53C6B #9FA53C #3CA577

split-complementary

#423CA5 #A5773C #6BA53C

monochromatic

#1E1B4B #302C78 #423CA5 #615BC3 #8C88D4

Accessibility & contrast

On white

8.67

#423CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#423CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CA5

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CA5	#FFFFFF	#000000	##FFFFFF
##423CA5	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0047A3

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423ca5;
/* rgb */ color: rgb(66, 60, 165);
/* oklch */ color: oklch(42.8% 0.163 279.5);

Tailwind

colors: {
  custom: {
    50: '#8172c1',
    500: '#423ca5',
    950: '#000000',
  },
}

SCSS

$custom: #423ca5;
$custom-light: #8172c1;
$custom-dark: #000000;

JSON

{
  "hex": "#423ca5",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 165
  },
  "hsl": {
    "h": 243.429,
    "s": 46.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42827,
    "c": 0.16325,
    "h": 279.5
  },
  "luminance": 0.07107
}

Semantic roles & 50–950 ramp

primary

#423CA5

secondary

#BABE7F

accent

#D651CF

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423CA5

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

Preview Lab → · Contrast checker → · Palette generator →