#423AA3#423AA3

#423AA3 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.163 H 280.2°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#423AA3
RGB	rgb(66, 58, 163)
HSL	hsl(245, 48%, 43%)
HSV	hsv(245, 64%, 64%)
CMYK	cmyk(59.5%, 64.4%, 0%, 36.1%)
CIE-LAB	lab(31.41, 34.55, -55.80)
CIE-LCH	lch(31.41, 65.63, 301.76°)
OKLab	oklab(42.31% 0.029 -0.1605)
OKLCH	oklch(42.31% 0.163 280.2)
XYZ	xyz(10.3686, 6.8280, 35.4148)
Luminance	0.0683 (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

#423AA3 #9BA33A

analogous

#3A67A3 #423AA3 #763AA3

triadic

#423AA3 #A3423A #3AA342

tetradic

#423AA3 #A33A67 #9BA33A #3AA376

square

#423AA3 #A33A67 #9BA33A #3AA376

split-complementary

#423AA3 #A3763A #67A33A

monochromatic

#1D1A49 #302A76 #423AA3 #5F57C3 #8A84D3

Accessibility & contrast

On white

8.88

#423AA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#423AA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423AA3

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423AA3	#FFFFFF	#000000	##FFFFFF
##423AA3	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0046A1

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #423aa3;
/* rgb */ color: rgb(66, 58, 163);
/* oklch */ color: oklch(42.3% 0.163 280.2);

Tailwind

colors: {
  custom: {
    50: '#8171bf',
    500: '#423aa3',
    950: '#000000',
  },
}

SCSS

$custom: #423aa3;
$custom-light: #8171bf;
$custom-dark: #000000;

JSON

{
  "hex": "#423aa3",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 163
  },
  "hsl": {
    "h": 244.571,
    "s": 47.511,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42313,
    "c": 0.16311,
    "h": 280.2
  },
  "luminance": 0.06829
}

Semantic roles & 50–950 ramp

primary

#423AA3

secondary

#B8BD7C

accent

#D751CD

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #423AA3

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

Preview Lab → · Contrast checker → · Palette generator →