#423CB7#423CB7

#423CB7 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.4% C 0.187 H 277.7°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#423CB7
RGB	rgb(66, 60, 183)
HSL	hsl(243, 51%, 48%)
HSV	hsv(243, 67%, 72%)
CMYK	cmyk(63.9%, 67.2%, 0%, 28.2%)
CIE-LAB	lab(33.58, 39.93, -64.20)
CIE-LCH	lch(33.58, 75.61, 301.88°)
OKLab	oklab(44.42% 0.0252 -0.1851)
OKLCH	oklch(44.42% 0.187 277.7)
XYZ	xyz(12.4071, 7.8079, 45.6438)
Luminance	0.0781 (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

#423CB7 #B1B73C

analogous

#3C73B7 #423CB7 #803CB7

triadic

#423CB7 #B7423C #3CB742

tetradic

#423CB7 #B73C73 #B1B73C #3CB780

square

#423CB7 #B73C73 #B1B73C #3CB780

split-complementary

#423CB7 #B7803C #73B73C

monochromatic

#211E5B #312D89 #423CB7 #6964CC #9692DB

Accessibility & contrast

On white

8.20

#423CB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#423CB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CB7

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CB7	#FFFFFF	#000000	##FFFFFF
##423CB7	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#004AB5

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423cb7;
/* rgb */ color: rgb(66, 60, 183);
/* oklch */ color: oklch(44.4% 0.187 277.7);

Tailwind

colors: {
  custom: {
    50: '#8473ce',
    500: '#423cb7',
    950: '#000000',
  },
}

SCSS

$custom: #423cb7;
$custom-light: #8473ce;
$custom-dark: #000000;

JSON

{
  "hex": "#423cb7",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 183
  },
  "hsl": {
    "h": 242.927,
    "s": 50.617,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44416,
    "c": 0.18686,
    "h": 277.7
  },
  "luminance": 0.07809
}

Semantic roles & 50–950 ramp

primary

#423CB7

secondary

#C3C688

accent

#DA4ED3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423CB7

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

Preview Lab → · Contrast checker → · Palette generator →