#423BD1#423BD1

#423BD1 is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.7% C 0.220 H 275.7°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#423BD1
RGB	rgb(66, 59, 209)
HSL	hsl(243, 62%, 53%)
HSV	hsv(243, 72%, 82%)
CMYK	cmyk(68.4%, 71.8%, 0%, 18%)
CIE-LAB	lab(35.77, 48.94, -75.81)
CIE-LCH	lch(35.77, 90.24, 302.85°)
OKLab	oklab(46.72% 0.0219 -0.2191)
OKLCH	oklch(46.72% 0.22 275.7)
XYZ	xyz(15.3156, 8.8882, 61.2177)
Luminance	0.0889 (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

#423BD1 #CAD13B

analogous

#3B7FD1 #423BD1 #8D3BD1

triadic

#423BD1 #D1423B #3BD142

tetradic

#423BD1 #D13B7F #CAD13B #3BD18D

square

#423BD1 #D13B7F #CAD13B #3BD18D

split-complementary

#423BD1 #D18D3B #7FD13B

monochromatic

#201C76 #2D27A7 #423BD1 #726DDD #A29EE8

Accessibility & contrast

On white

7.56

#423BD1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#423BD1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BD1

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BD1	#FFFFFF	#000000	##FFFFFF
##423BD1	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BD5

Deuteranopia (green-blind)

#004DCE

Tritanopia (blue-blind)

#006582

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #423bd1;
/* rgb */ color: rgb(66, 59, 209);
/* oklch */ color: oklch(46.7% 0.220 275.7);

Tailwind

colors: {
  custom: {
    50: '#8a73e0',
    500: '#423bd1',
    950: '#000000',
  },
}

SCSS

$custom: #423bd1;
$custom-light: #8a73e0;
$custom-dark: #000000;

JSON

{
  "hex": "#423bd1",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 209
  },
  "hsl": {
    "h": 242.8,
    "s": 61.983,
    "l": 52.549
  },
  "oklch": {
    "l": 0.46716,
    "c": 0.2202,
    "h": 275.7
  },
  "luminance": 0.0889
}

Semantic roles & 50–950 ramp

primary

#423BD1

secondary

#D1D493

accent

#E543DD

background

#F9F7FD

surface

#F2EDFB

border

#CCC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423BD1

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

Preview Lab → · Contrast checker → · Palette generator →