#423EA4#423EA4

#423EA4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.159 H 279.1°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#423EA4
RGB	rgb(66, 62, 164)
HSL	hsl(242, 45%, 44%)
HSV	hsv(242, 62%, 64%)
CMYK	cmyk(59.8%, 62.2%, 0%, 35.7%)
CIE-LAB	lab(32.44, 32.38, -54.72)
CIE-LCH	lch(32.44, 63.58, 300.61°)
OKLab	oklab(43.09% 0.0252 -0.1573)
OKLCH	oklch(43.09% 0.159 279.1)
XYZ	xyz(10.6681, 7.2831, 35.9584)
Luminance	0.0728 (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

#423EA4 #A0A43E

analogous

#3E6DA4 #423EA4 #753EA4

triadic

#423EA4 #A4423E #3EA442

tetradic

#423EA4 #A43E6D #A0A43E #3EA475

square

#423EA4 #A43E6D #A0A43E #3EA475

split-complementary

#423EA4 #A4753E #6DA43E

monochromatic

#1E1C4B #302D78 #423EA4 #615DC2 #8D8AD3

Accessibility & contrast

On white

8.55

#423EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#423EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EA4

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EA4	#FFFFFF	#000000	##FFFFFF
##423EA4	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A7

Deuteranopia (green-blind)

#0048A2

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423ea4;
/* rgb */ color: rgb(66, 62, 164);
/* oklch */ color: oklch(43.1% 0.159 279.1);

Tailwind

colors: {
  custom: {
    50: '#8173c0',
    500: '#423ea4',
    950: '#000000',
  },
}

SCSS

$custom: #423ea4;
$custom-light: #8173c0;
$custom-dark: #000000;

JSON

{
  "hex": "#423ea4",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 164
  },
  "hsl": {
    "h": 242.353,
    "s": 45.133,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43092,
    "c": 0.15932,
    "h": 279.1
  },
  "luminance": 0.07284
}

Semantic roles & 50–950 ramp

primary

#423EA4

secondary

#BBBD81

accent

#D553D0

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423EA4

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

Preview Lab → · Contrast checker → · Palette generator →