#423B8A#423B8A

#423B8A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.127 H 283.1°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#423B8A
RGB	rgb(66, 59, 138)
HSL	hsl(245, 40%, 39%)
HSV	hsv(245, 57%, 54%)
CMYK	cmyk(52.2%, 57.2%, 0%, 45.9%)
CIE-LAB	lab(29.71, 25.64, -43.29)
CIE-LCH	lch(29.71, 50.31, 300.64°)
OKLab	oklab(40.45% 0.0289 -0.1237)
OKLCH	oklch(40.45% 0.127 283.1)
XYZ	xyz(8.3968, 6.1207, 24.7788)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423B8A #838A3B

analogous

#3B5B8A #423B8A #693B8A

triadic

#423B8A #8A423B #3B8A42

tetradic

#423B8A #8A3B5B #838A3B #3B8A69

square

#423B8A #8A3B5B #838A3B #3B8A69

split-complementary

#423B8A #8A693B #5B8A3B

monochromatic

#191634 #2D295F #423B8A #584FB4 #8079C6

Accessibility & contrast

On white

9.44

#423B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#423B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423B8A

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423B8A	#FFFFFF	#000000	##FFFFFF
##423B8A	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07498D

Deuteranopia (green-blind)

#004388

Tritanopia (blue-blind)

#264D5C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #423b8a;
/* rgb */ color: rgb(66, 59, 138);
/* oklch */ color: oklch(40.5% 0.127 283.1);

Tailwind

colors: {
  custom: {
    50: '#7c71ad',
    500: '#423b8a',
    950: '#000000',
  },
}

SCSS

$custom: #423b8a;
$custom-light: #7c71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#423b8a",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 138
  },
  "hsl": {
    "h": 245.316,
    "s": 40.102,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40453,
    "c": 0.12703,
    "h": 283.1
  },
  "luminance": 0.06121
}

Semantic roles & 50–950 ramp

primary

#423B8A

secondary

#AAAF71

accent

#D058C5

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #423B8A

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

Preview Lab → · Contrast checker → · Palette generator →