#423FD1#423FD1

#423FD1 is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.3% C 0.216 H 275.2°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#423FD1
RGB	rgb(66, 63, 209)
HSL	hsl(241, 61%, 53%)
HSV	hsv(241, 70%, 82%)
CMYK	cmyk(68.4%, 69.9%, 0%, 18%)
CIE-LAB	lab(36.58, 46.68, -74.47)
CIE-LCH	lch(36.58, 87.89, 302.08°)
OKLab	oklab(47.3% 0.0196 -0.2152)
OKLCH	oklch(47.3% 0.216 275.2)
XYZ	xyz(15.5291, 9.3153, 61.2889)
Luminance	0.0932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FD1 #CED13F

analogous

#3F85D1 #423FD1 #8B3FD1

triadic

#423FD1 #D1423F #3FD142

tetradic

#423FD1 #D13F85 #CED13F #3FD18B

square

#423FD1 #D13F85 #CED13F #3FD18B

split-complementary

#423FD1 #D18B3F #85D13F

monochromatic

#1F1D79 #2B29AA #423FD1 #7370DD #A3A2E9

Accessibility & contrast

On white

7.33

#423FD1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#423FD1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FD1

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FD1	#FFFFFF	#000000	##FFFFFF
##423FD1	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD5

Deuteranopia (green-blind)

#004FCE

Tritanopia (blue-blind)

#006783

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #423fd1;
/* rgb */ color: rgb(66, 63, 209);
/* oklch */ color: oklch(47.3% 0.216 275.2);

Tailwind

colors: {
  custom: {
    50: '#8975e0',
    500: '#423fd1',
    950: '#000000',
  },
}

SCSS

$custom: #423fd1;
$custom-light: #8975e0;
$custom-dark: #000000;

JSON

{
  "hex": "#423fd1",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 209
  },
  "hsl": {
    "h": 241.233,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.473,
    "c": 0.21609,
    "h": 275.2
  },
  "luminance": 0.09317
}

Semantic roles & 50–950 ramp

primary

#423FD1

secondary

#D4D597

accent

#E443E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423FD1

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

Preview Lab → · Contrast checker → · Palette generator →