#423DA7#423DA7

#423DA7 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.165 H 279.1°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#423DA7
RGB	rgb(66, 61, 167)
HSL	hsl(243, 46%, 45%)
HSV	hsv(243, 63%, 65%)
CMYK	cmyk(60.5%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(32.45, 34.01, -56.52)
CIE-LCH	lch(32.45, 65.96, 301.04°)
OKLab	oklab(43.17% 0.0259 -0.1626)
OKLCH	oklch(43.17% 0.165 279.1)
XYZ	xyz(10.8883, 7.2850, 37.3841)
Luminance	0.0729 (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

#423DA7 #A2A73D

analogous

#3D6DA7 #423DA7 #773DA7

triadic

#423DA7 #A7423D #3DA742

tetradic

#423DA7 #A73D6D #A2A73D #3DA777

square

#423DA7 #A73D6D #A2A73D #3DA777

split-complementary

#423DA7 #A7773D #6DA73D

monochromatic

#1F1C4D #302D7A #423DA7 #625DC4 #8E8AD4

Accessibility & contrast

On white

8.55

#423DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#423DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DA7

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DA7	#FFFFFF	#000000	##FFFFFF
##423DA7	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)

#0051AA

Deuteranopia (green-blind)

#0048A5

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423da7;
/* rgb */ color: rgb(66, 61, 167);
/* oklch */ color: oklch(43.2% 0.165 279.1);

Tailwind

colors: {
  custom: {
    50: '#8173c2',
    500: '#423da7',
    950: '#000000',
  },
}

SCSS

$custom: #423da7;
$custom-light: #8173c2;
$custom-dark: #000000;

JSON

{
  "hex": "#423da7",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 242.83,
    "s": 46.491,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43171,
    "c": 0.16466,
    "h": 279.1
  },
  "luminance": 0.07286
}

Semantic roles & 50–950 ramp

primary

#423DA7

secondary

#BCBF81

accent

#D652D0

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423DA7

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

Preview Lab → · Contrast checker → · Palette generator →