#423FC1#423FC1

#423FC1 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.8% C 0.196 H 276.4°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#423FC1
RGB	rgb(66, 63, 193)
HSL	hsl(241, 51%, 50%)
HSV	hsv(241, 67%, 76%)
CMYK	cmyk(65.8%, 67.4%, 0%, 24.3%)
CIE-LAB	lab(35.13, 41.44, -67.55)
CIE-LCH	lch(35.13, 79.25, 301.53°)
OKLab	oklab(45.81% 0.0217 -0.195)
OKLCH	oklch(45.81% 0.196 276.4)
XYZ	xyz(13.6468, 8.5623, 51.3753)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.46

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FC1 #BEC13F

analogous

#3F7DC1 #423FC1 #833FC1

triadic

#423FC1 #C1423F #3FC142

tetradic

#423FC1 #C13F7D #BEC13F #3FC183

square

#423FC1 #C13F7D #BEC13F #3FC183

split-complementary

#423FC1 #C1833F #7DC13F

monochromatic

#222165 #323093 #423FC1 #706DD0 #9D9CDF

Accessibility & contrast

On white

7.74

#423FC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#423FC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FC1

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FC1	#FFFFFF	#000000	##FFFFFF
##423FC1	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C5

Deuteranopia (green-blind)

#004DBF

Tritanopia (blue-blind)

#00617B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #423fc1;
/* rgb */ color: rgb(66, 63, 193);
/* oklch */ color: oklch(45.8% 0.196 276.4);

Tailwind

colors: {
  custom: {
    50: '#8675d5',
    500: '#423fc1',
    950: '#000000',
  },
}

SCSS

$custom: #423fc1;
$custom-light: #8675d5;
$custom-dark: #000000;

JSON

{
  "hex": "#423fc1",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 193
  },
  "hsl": {
    "h": 241.385,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45807,
    "c": 0.19617,
    "h": 276.4
  },
  "luminance": 0.08564
}

Semantic roles & 50–950 ramp

primary

#423FC1

secondary

#CACB91

accent

#DB4DD7

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #423FC1

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

Preview Lab → · Contrast checker → · Palette generator →