#423CB8#423CB8

#423CB8 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.5% C 0.188 H 277.7°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#423CB8
RGB	rgb(66, 60, 184)
HSL	hsl(243, 51%, 48%)
HSV	hsv(243, 67%, 72%)
CMYK	cmyk(64.1%, 67.4%, 0%, 27.8%)
CIE-LAB	lab(33.67, 40.26, -64.65)
CIE-LCH	lch(33.67, 76.16, 301.92°)
OKLab	oklab(44.51% 0.0251 -0.1865)
OKLCH	oklch(44.51% 0.188 277.7)
XYZ	xyz(12.5116, 7.8496, 46.1939)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.32

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423CB8 #B2B83C

analogous

#3C74B8 #423CB8 #803CB8

triadic

#423CB8 #B8423C #3CB842

tetradic

#423CB8 #B83C74 #B2B83C #3CB880

square

#423CB8 #B83C74 #B2B83C #3CB880

split-complementary

#423CB8 #B8803C #74B83C

monochromatic

#211E5C #312D8A #423CB8 #6A65CD #9693DC

Accessibility & contrast

On white

8.17

#423CB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#423CB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CB8

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CB8	#FFFFFF	#000000	##FFFFFF
##423CB8	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#004AB6

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423cb8;
/* rgb */ color: rgb(66, 60, 184);
/* oklch */ color: oklch(44.5% 0.188 277.7);

Tailwind

colors: {
  custom: {
    50: '#8473ce',
    500: '#423cb8',
    950: '#000000',
  },
}

SCSS

$custom: #423cb8;
$custom-light: #8473ce;
$custom-dark: #000000;

JSON

{
  "hex": "#423cb8",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 184
  },
  "hsl": {
    "h": 242.903,
    "s": 50.82,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44507,
    "c": 0.18814,
    "h": 277.7
  },
  "luminance": 0.07851
}

Semantic roles & 50–950 ramp

primary

#423CB8

secondary

#C4C789

accent

#DA4DD3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423CB8

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

Preview Lab → · Contrast checker → · Palette generator →