#423DAD#423DAD

#423DAD is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.173 H 278.5°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#423DAD
RGB	rgb(66, 61, 173)
HSL	hsl(243, 48%, 46%)
HSV	hsv(243, 65%, 68%)
CMYK	cmyk(61.8%, 64.7%, 0%, 32.2%)
CIE-LAB	lab(32.95, 36.01, -59.30)
CIE-LCH	lch(32.95, 69.37, 301.27°)
OKLab	oklab(43.69% 0.0254 -0.1708)
OKLCH	oklch(43.69% 0.173 278.5)
XYZ	xyz(11.4559, 7.5120, 40.3733)
Luminance	0.0751 (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

#423DAD #A8AD3D

analogous

#3D70AD #423DAD #7A3DAD

triadic

#423DAD #AD423D #3DAD42

tetradic

#423DAD #AD3D70 #A8AD3D #3DAD7A

square

#423DAD #AD3D70 #A8AD3D #3DAD7A

split-complementary

#423DAD #AD7A3D #70AD3D

monochromatic

#1F1D53 #312D80 #423DAD #6560C7 #918DD7

Accessibility & contrast

On white

8.39

#423DAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#423DAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DAD

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DAD	#FFFFFF	#000000	##FFFFFF
##423DAD	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B1

Deuteranopia (green-blind)

#0049AB

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #423dad;
/* rgb */ color: rgb(66, 61, 173);
/* oklch */ color: oklch(43.7% 0.173 278.5);

Tailwind

colors: {
  custom: {
    50: '#8273c6',
    500: '#423dad',
    950: '#000000',
  },
}

SCSS

$custom: #423dad;
$custom-light: #8273c6;
$custom-dark: #000000;

JSON

{
  "hex": "#423dad",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 173
  },
  "hsl": {
    "h": 242.679,
    "s": 47.863,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4369,
    "c": 0.17264,
    "h": 278.5
  },
  "luminance": 0.07513
}

Semantic roles & 50–950 ramp

primary

#423DAD

secondary

#BFC284

accent

#D750D1

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423DAD

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

Preview Lab → · Contrast checker → · Palette generator →