#423FFF#423FFF

#423FFF is a mid, highly saturated blue. Relative luminance 0.119; OKLCH L 51.9% C 0.270 H 272.5°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#423FFF
RGB	rgb(66, 63, 255)
HSL	hsl(241, 100%, 62%)
HSV	hsv(241, 75%, 100%)
CMYK	cmyk(74.1%, 75.3%, 0%, 0%)
CIE-LAB	lab(41.11, 61.17, -93.14)
CIE-LCH	lch(41.11, 111.43, 303.29°)
OKLab	oklab(51.86% 0.0116 -0.2696)
OKLCH	oklch(51.86% 0.27 272.5)
XYZ	xyz(22.0682, 11.9309, 95.7282)
Luminance	0.1193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FFF #FCFF3F

analogous

#3F9CFF #423FFF #A23FFF

triadic

#423FFF #FF423F #3FFF42

tetradic

#423FFF #FF3F9C #FCFF3F #3FFFA2

square

#423FFF #FF3F9C #FCFF3F #3FFFA2

split-complementary

#423FFF #FFA23F #9CFF3F

monochromatic

#0300C4 #0602FF #423FFF #7E7CFF #BAB9FF

Accessibility & contrast

On white

6.20

#423FFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#423FFF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #423FFF

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FFF	#FFFFFF	#000000	##FFFFFF
##423FFF	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AFF

Deuteranopia (green-blind)

#0057FC

Tritanopia (blue-blind)

#00799D

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #423fff;
/* rgb */ color: rgb(66, 63, 255);
/* oklch */ color: oklch(51.9% 0.270 272.5);

Tailwind

colors: {
  custom: {
    50: '#9377ff',
    500: '#423fff',
    950: '#000000',
  },
}

SCSS

$custom: #423fff;
$custom-light: #9377ff;
$custom-dark: #000000;

JSON

{
  "hex": "#423fff",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 255
  },
  "hsl": {
    "h": 240.938,
    "s": 100,
    "l": 62.353
  },
  "oklch": {
    "l": 0.5186,
    "c": 0.26982,
    "h": 272.5
  },
  "luminance": 0.11933
}

Semantic roles & 50–950 ramp

primary

#423FFF

secondary

#EFF0AA

accent

#E600E2

background

#FAF7FF

surface

#F4EDFF

border

#CEC8D7

text

#0F0918

muted

#7F7B86

Preview Lab

Preview with #423FFF

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

Preview Lab → · Contrast checker → · Palette generator →