#423A99#423A99

#423A99 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.150 H 281.5°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#423A99
RGB	rgb(66, 58, 153)
HSL	hsl(245, 45%, 41%)
HSV	hsv(245, 62%, 60%)
CMYK	cmyk(56.9%, 62.1%, 0%, 40%)
CIE-LAB	lab(30.60, 31.24, -51.06)
CIE-LCH	lch(30.60, 59.85, 301.46°)
OKLab	oklab(41.47% 0.0297 -0.1466)
OKLCH	oklch(41.47% 0.15 281.5)
XYZ	xyz(9.5078, 6.4837, 30.8813)
Luminance	0.0648 (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

#423A99 #91993A

analogous

#3A6299 #423A99 #723A99

triadic

#423A99 #99423A #3A9942

tetradic

#423A99 #993A62 #91993A #3A9972

square

#423A99 #993A62 #91993A #3A9972

split-complementary

#423A99 #99723A #62993A

monochromatic

#1C1840 #2F296D #423A99 #5C53BE #867FCE

Accessibility & contrast

On white

9.14

#423A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#423A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423A99

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423A99	#FFFFFF	#000000	##FFFFFF
##423A99	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#165164

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #423a99;
/* rgb */ color: rgb(66, 58, 153);
/* oklch */ color: oklch(41.5% 0.150 281.5);

Tailwind

colors: {
  custom: {
    50: '#7f70b8',
    500: '#423a99',
    950: '#000000',
  },
}

SCSS

$custom: #423a99;
$custom-light: #7f70b8;
$custom-dark: #000000;

JSON

{
  "hex": "#423a99",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 245.053,
    "s": 45.024,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41466,
    "c": 0.14955,
    "h": 281.5
  },
  "luminance": 0.06484
}

Semantic roles & 50–950 ramp

primary

#423A99

secondary

#B3B877

accent

#D553CA

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #423A99

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

Preview Lab → · Contrast checker → · Palette generator →