#423DA5#423DA5

#423DA5 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.162 H 279.3°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#423DA5
RGB	rgb(66, 61, 165)
HSL	hsl(243, 46%, 44%)
HSV	hsv(243, 63%, 65%)
CMYK	cmyk(60%, 63%, 0%, 35.3%)
CIE-LAB	lab(32.28, 33.34, -55.58)
CIE-LCH	lch(32.28, 64.82, 300.96°)
OKLab	oklab(43% 0.0261 -0.1599)
OKLCH	oklch(43% 0.162 279.3)
XYZ	xyz(10.7049, 7.2116, 36.4179)
Luminance	0.0721 (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

#423DA5 #A0A53D

analogous

#3D6CA5 #423DA5 #763DA5

triadic

#423DA5 #A5423D #3DA542

tetradic

#423DA5 #A53D6C #A0A53D #3DA576

square

#423DA5 #A53D6C #A0A53D #3DA576

split-complementary

#423DA5 #A5763D #6CA53D

monochromatic

#1E1C4C #302C78 #423DA5 #615CC3 #8D89D3

Accessibility & contrast

On white

8.60

#423DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#423DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DA5

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DA5	#FFFFFF	#000000	##FFFFFF
##423DA5	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0048A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #423da5;
/* rgb */ color: rgb(66, 61, 165);
/* oklch */ color: oklch(43.0% 0.162 279.3);

Tailwind

colors: {
  custom: {
    50: '#8173c1',
    500: '#423da5',
    950: '#000000',
  },
}

SCSS

$custom: #423da5;
$custom-light: #8173c1;
$custom-dark: #000000;

JSON

{
  "hex": "#423da5",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 165
  },
  "hsl": {
    "h": 242.885,
    "s": 46.018,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43001,
    "c": 0.16197,
    "h": 279.3
  },
  "luminance": 0.07212
}

Semantic roles & 50–950 ramp

primary

#423DA5

secondary

#BBBE80

accent

#D652CF

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423DA5

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

Preview Lab → · Contrast checker → · Palette generator →