#423599#423599

#423599 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.6% C 0.156 H 282.8°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#423599
RGB	rgb(66, 53, 153)
HSL	hsl(248, 49%, 40%)
HSV	hsv(248, 65%, 60%)
CMYK	cmyk(56.9%, 65.4%, 0%, 40%)
CIE-LAB	lab(29.42, 34.35, -52.98)
CIE-LCH	lch(29.42, 63.14, 302.96°)
OKLab	oklab(40.61% 0.0347 -0.1522)
OKLCH	oklch(40.61% 0.156 282.8)
XYZ	xyz(9.2679, 6.0038, 30.8013)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423599 #8C9935

analogous

#355A99 #423599 #743599

triadic

#423599 #994235 #359942

tetradic

#423599 #99355A #8C9935 #359974

square

#423599 #99355A #8C9935 #359974

split-complementary

#423599 #997435 #5A9935

monochromatic

#1B163E #2E256C #423599 #5A4BC1 #8478D0

Accessibility & contrast

On white

9.54

#423599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#423599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423599

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423599	#FFFFFF	#000000	##FFFFFF
##423599	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#174E62

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #423599;
/* rgb */ color: rgb(66, 53, 153);
/* oklch */ color: oklch(40.6% 0.156 282.8);

Tailwind

colors: {
  custom: {
    50: '#7f6db8',
    500: '#423599',
    950: '#000000',
  },
}

SCSS

$custom: #423599;
$custom-light: #7f6db8;
$custom-dark: #000000;

JSON

{
  "hex": "#423599",
  "rgb": {
    "r": 66,
    "g": 53,
    "b": 153
  },
  "hsl": {
    "h": 247.8,
    "s": 48.544,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40605,
    "c": 0.15614,
    "h": 282.8
  },
  "luminance": 0.06004
}

Semantic roles & 50–950 ramp

primary

#423599

secondary

#B0B971

accent

#D850C6

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #423599

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

Preview Lab → · Contrast checker → · Palette generator →