#423FD9#423FD9

#423FD9 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 48.1% C 0.226 H 274.7°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#423FD9
RGB	rgb(66, 63, 217)
HSL	hsl(241, 67%, 55%)
HSV	hsv(241, 71%, 85%)
CMYK	cmyk(69.6%, 71%, 0%, 14.9%)
CIE-LAB	lab(37.34, 49.27, -77.84)
CIE-LCH	lch(37.34, 92.12, 302.33°)
OKLab	oklab(48.07% 0.0183 -0.225)
OKLCH	oklch(48.07% 0.226 274.7)
XYZ	xyz(16.5445, 9.7214, 66.6367)
Luminance	0.0972 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.13

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FD9 #D6D93F

analogous

#3F89D9 #423FD9 #8F3FD9

triadic

#423FD9 #D9423F #3FD942

tetradic

#423FD9 #D93F89 #D6D93F #3FD98F

square

#423FD9 #D93F89 #D6D93F #3FD98F

split-complementary

#423FD9 #D98F3F #89D93F

monochromatic

#1C1A84 #2724B7 #423FD9 #7472E3 #A7A5ED

Accessibility & contrast

On white

7.13

#423FD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#423FD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FD9

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FD9	#FFFFFF	#000000	##FFFFFF
##423FD9	1.00	7.13	2.94	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDE

Deuteranopia (green-blind)

#0051D6

Tritanopia (blue-blind)

#006A88

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #423fd9;
/* rgb */ color: rgb(66, 63, 217);
/* oklch */ color: oklch(48.1% 0.226 274.7);

Tailwind

colors: {
  custom: {
    50: '#8b76e6',
    500: '#423fd9',
    950: '#000000',
  },
}

SCSS

$custom: #423fd9;
$custom-light: #8b76e6;
$custom-dark: #000000;

JSON

{
  "hex": "#423fd9",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 217
  },
  "hsl": {
    "h": 241.169,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.48067,
    "c": 0.22578,
    "h": 274.7
  },
  "luminance": 0.09723
}

Semantic roles & 50–950 ramp

primary

#423FD9

secondary

#D9DA9A

accent

#EA3EE7

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #423FD9

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

Preview Lab → · Contrast checker → · Palette generator →