#423BD5#423BD5

#423BD5 is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 47.1% C 0.225 H 275.4°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#423BD5
RGB	rgb(66, 59, 213)
HSL	hsl(243, 65%, 53%)
HSV	hsv(243, 72%, 84%)
CMYK	cmyk(69%, 72.3%, 0%, 16.5%)
CIE-LAB	lab(36.15, 50.22, -77.49)
CIE-LCH	lch(36.15, 92.34, 302.94°)
OKLab	oklab(47.11% 0.0212 -0.224)
OKLCH	oklch(47.11% 0.225 275.4)
XYZ	xyz(15.8170, 9.0888, 63.8586)
Luminance	0.0909 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.51

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423BD5 #CED53B

analogous

#3B81D5 #423BD5 #8F3BD5

triadic

#423BD5 #D5423B #3BD542

tetradic

#423BD5 #D53B81 #CED53B #3BD58F

square

#423BD5 #D53B81 #CED53B #3BD58F

split-complementary

#423BD5 #D58F3B #81D53B

monochromatic

#1F1A7B #2B25AE #423BD5 #736DE0 #A3A0EB

Accessibility & contrast

On white

7.45

#423BD5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#423BD5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BD5

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BD5	#FFFFFF	#000000	##FFFFFF
##423BD5	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CDA

Deuteranopia (green-blind)

#004ED2

Tritanopia (blue-blind)

#006785

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #423bd5;
/* rgb */ color: rgb(66, 59, 213);
/* oklch */ color: oklch(47.1% 0.225 275.4);

Tailwind

colors: {
  custom: {
    50: '#8a73e3',
    500: '#423bd5',
    950: '#000000',
  },
}

SCSS

$custom: #423bd5;
$custom-light: #8a73e3;
$custom-dark: #000000;

JSON

{
  "hex": "#423bd5",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 213
  },
  "hsl": {
    "h": 242.727,
    "s": 64.706,
    "l": 53.333
  },
  "oklch": {
    "l": 0.47108,
    "c": 0.22499,
    "h": 275.4
  },
  "luminance": 0.0909
}

Semantic roles & 50–950 ramp

primary

#423BD5

secondary

#D4D795

accent

#E840E0

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #423BD5

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

Preview Lab → · Contrast checker → · Palette generator →