#423DAA#423DAA

#423DAA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.169 H 278.8°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#423DAA
RGB	rgb(66, 61, 170)
HSL	hsl(243, 47%, 45%)
HSV	hsv(243, 64%, 67%)
CMYK	cmyk(61.2%, 64.1%, 0%, 33.3%)
CIE-LAB	lab(32.69, 35.01, -57.91)
CIE-LCH	lch(32.69, 67.67, 301.16°)
OKLab	oklab(43.43% 0.0257 -0.1667)
OKLCH	oklch(43.43% 0.169 278.8)
XYZ	xyz(11.1689, 7.3972, 38.8617)
Luminance	0.0740 (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

#423DAA #A5AA3D

analogous

#3D6FAA #423DAA #783DAA

triadic

#423DAA #AA423D #3DAA42

tetradic

#423DAA #AA3D6F #A5AA3D #3DAA78

square

#423DAA #AA3D6F #A5AA3D #3DAA78

split-complementary

#423DAA #AA783D #6FAA3D

monochromatic

#1F1D50 #312D7D #423DAA #635FC5 #8F8CD6

Accessibility & contrast

On white

8.47

#423DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#423DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DAA

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DAA	#FFFFFF	#000000	##FFFFFF
##423DAA	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0048A8

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #423daa;
/* rgb */ color: rgb(66, 61, 170);
/* oklch */ color: oklch(43.4% 0.169 278.8);

Tailwind

colors: {
  custom: {
    50: '#8273c4',
    500: '#423daa',
    950: '#000000',
  },
}

SCSS

$custom: #423daa;
$custom-light: #8273c4;
$custom-dark: #000000;

JSON

{
  "hex": "#423daa",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 170
  },
  "hsl": {
    "h": 242.752,
    "s": 47.186,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43429,
    "c": 0.16867,
    "h": 278.8
  },
  "luminance": 0.07398
}

Semantic roles & 50–950 ramp

primary

#423DAA

secondary

#BDC082

accent

#D751D1

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423DAA

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

Preview Lab → · Contrast checker → · Palette generator →