#423DB2#423DB2

#423DB2 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.1% C 0.179 H 278.0°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#423DB2
RGB	rgb(66, 61, 178)
HSL	hsl(243, 49%, 47%)
HSV	hsv(243, 66%, 70%)
CMYK	cmyk(62.9%, 65.7%, 0%, 30.2%)
CIE-LAB	lab(33.37, 37.67, -61.58)
CIE-LCH	lch(33.37, 72.19, 301.46°)
OKLab	oklab(44.13% 0.025 -0.1775)
OKLCH	oklch(44.13% 0.179 278)
XYZ	xyz(11.9488, 7.7092, 42.9692)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.23

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423DB2 #ADB23D

analogous

#3D73B2 #423DB2 #7D3DB2

triadic

#423DB2 #B2423D #3DB242

tetradic

#423DB2 #B23D73 #ADB23D #3DB27D

square

#423DB2 #B23D73 #ADB23D #3DB27D

split-complementary

#423DB2 #B27D3D #73B23D

monochromatic

#201E57 #312D84 #423DB2 #6763C9 #9390D9

Accessibility & contrast

On white

8.26

#423DB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#423DB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DB2

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DB2	#FFFFFF	#000000	##FFFFFF
##423DB2	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B6

Deuteranopia (green-blind)

#004AB0

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423db2;
/* rgb */ color: rgb(66, 61, 178);
/* oklch */ color: oklch(44.1% 0.179 278.0);

Tailwind

colors: {
  custom: {
    50: '#8373ca',
    500: '#423db2',
    950: '#000000',
  },
}

SCSS

$custom: #423db2;
$custom-light: #8373ca;
$custom-dark: #000000;

JSON

{
  "hex": "#423db2",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 178
  },
  "hsl": {
    "h": 242.564,
    "s": 48.954,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4413,
    "c": 0.17921,
    "h": 278
  },
  "luminance": 0.0771
}

Semantic roles & 50–950 ramp

primary

#423DB2

secondary

#C1C487

accent

#D94FD3

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423DB2

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

Preview Lab → · Contrast checker → · Palette generator →