#423CA6#423CA6

#423CA6 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.165 H 279.4°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#423CA6
RGB	rgb(66, 60, 166)
HSL	hsl(243, 47%, 44%)
HSV	hsv(243, 64%, 65%)
CMYK	cmyk(60.2%, 63.9%, 0%, 34.9%)
CIE-LAB	lab(32.13, 34.30, -56.44)
CIE-LCH	lch(32.13, 66.04, 301.29°)
OKLab	oklab(42.91% 0.0269 -0.1624)
OKLCH	oklch(42.91% 0.165 279.4)
XYZ	xyz(10.7434, 7.1424, 36.8815)
Luminance	0.0714 (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

#423CA6 #A0A63C

analogous

#3C6BA6 #423CA6 #773CA6

triadic

#423CA6 #A6423C #3CA642

tetradic

#423CA6 #A63C6B #A0A63C #3CA677

square

#423CA6 #A63C6B #A0A63C #3CA677

split-complementary

#423CA6 #A6773C #6BA63C

monochromatic

#1E1C4C #302C79 #423CA6 #615BC4 #8D88D4

Accessibility & contrast

On white

8.65

#423CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#423CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CA6

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CA6	#FFFFFF	#000000	##FFFFFF
##423CA6	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0047A4

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423ca6;
/* rgb */ color: rgb(66, 60, 166);
/* oklch */ color: oklch(42.9% 0.165 279.4);

Tailwind

colors: {
  custom: {
    50: '#8172c1',
    500: '#423ca6',
    950: '#000000',
  },
}

SCSS

$custom: #423ca6;
$custom-light: #8172c1;
$custom-dark: #000000;

JSON

{
  "hex": "#423ca6",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 166
  },
  "hsl": {
    "h": 243.396,
    "s": 46.903,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42913,
    "c": 0.16459,
    "h": 279.4
  },
  "luminance": 0.07143
}

Semantic roles & 50–950 ramp

primary

#423CA6

secondary

#BBBE7F

accent

#D751CF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423CA6

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

Preview Lab → · Contrast checker → · Palette generator →