#423CB6#423CB6

#423CB6 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.186 H 277.8°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#423CB6
RGB	rgb(66, 60, 182)
HSL	hsl(243, 50%, 47%)
HSV	hsv(243, 67%, 71%)
CMYK	cmyk(63.7%, 67%, 0%, 28.6%)
CIE-LAB	lab(33.49, 39.60, -63.75)
CIE-LCH	lch(33.49, 75.05, 301.85°)
OKLab	oklab(44.33% 0.0253 -0.1838)
OKLCH	oklch(44.33% 0.186 277.8)
XYZ	xyz(12.3034, 7.7664, 45.0976)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.30

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423CB6 #B0B63C

analogous

#3C73B6 #423CB6 #7F3CB6

triadic

#423CB6 #B6423C #3CB642

tetradic

#423CB6 #B63C73 #B0B63C #3CB67F

square

#423CB6 #B63C73 #B0B63C #3CB67F

split-complementary

#423CB6 #B67F3C #73B63C

monochromatic

#211E5A #312D88 #423CB6 #6963CC #9591DB

Accessibility & contrast

On white

8.22

#423CB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#423CB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CB6

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CB6	#FFFFFF	#000000	##FFFFFF
##423CB6	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#004AB4

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423cb6;
/* rgb */ color: rgb(66, 60, 182);
/* oklch */ color: oklch(44.3% 0.186 277.8);

Tailwind

colors: {
  custom: {
    50: '#8472cd',
    500: '#423cb6',
    950: '#000000',
  },
}

SCSS

$custom: #423cb6;
$custom-light: #8472cd;
$custom-dark: #000000;

JSON

{
  "hex": "#423cb6",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 182
  },
  "hsl": {
    "h": 242.951,
    "s": 50.413,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44325,
    "c": 0.18557,
    "h": 277.8
  },
  "luminance": 0.07767
}

Semantic roles & 50–950 ramp

primary

#423CB6

secondary

#C3C688

accent

#DA4ED3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423CB6

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

Preview Lab → · Contrast checker → · Palette generator →