#423D8A#423D8A

#423D8A is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.8% C 0.124 H 282.3°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#423D8A
RGB	rgb(66, 61, 138)
HSL	hsl(244, 39%, 39%)
HSV	hsv(244, 56%, 54%)
CMYK	cmyk(52.2%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(30.23, 24.34, -42.45)
CIE-LCH	lch(30.23, 48.94, 299.82°)
OKLab	oklab(40.84% 0.0265 -0.1212)
OKLCH	oklch(40.84% 0.124 282.3)
XYZ	xyz(8.5016, 6.3303, 24.8137)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423D8A #858A3D

analogous

#3D5F8A #423D8A #693D8A

triadic

#423D8A #8A423D #3D8A42

tetradic

#423D8A #8A3D5F #858A3D #3D8A69

square

#423D8A #8A3D5F #858A3D #3D8A69

split-complementary

#423D8A #8A693D #5F8A3D

monochromatic

#191735 #2E2A60 #423D8A #5852B2 #817CC5

Accessibility & contrast

On white

9.27

#423D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#423D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423D8A

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423D8A	#FFFFFF	#000000	##FFFFFF
##423D8A	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104A8D

Deuteranopia (green-blind)

#074588

Tritanopia (blue-blind)

#264E5D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #423d8a;
/* rgb */ color: rgb(66, 61, 138);
/* oklch */ color: oklch(40.8% 0.124 282.3);

Tailwind

colors: {
  custom: {
    50: '#7c72ad',
    500: '#423d8a',
    950: '#000000',
  },
}

SCSS

$custom: #423d8a;
$custom-light: #7c72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#423d8a",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 243.896,
    "s": 38.693,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40837,
    "c": 0.12411,
    "h": 282.3
  },
  "luminance": 0.06331
}

Semantic roles & 50–950 ramp

primary

#423D8A

secondary

#ABAF74

accent

#CF59C7

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #423D8A

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

Preview Lab → · Contrast checker → · Palette generator →