#423BA8#423BA8

#423BA8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.169 H 279.4°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#423BA8
RGB	rgb(66, 59, 168)
HSL	hsl(244, 48%, 45%)
HSV	hsv(244, 65%, 66%)
CMYK	cmyk(60.7%, 64.9%, 0%, 34.1%)
CIE-LAB	lab(32.06, 35.58, -57.75)
CIE-LCH	lch(32.06, 67.83, 301.64°)
OKLab	oklab(42.92% 0.0277 -0.1662)
OKLCH	oklch(42.92% 0.169 279.4)
XYZ	xyz(10.8764, 7.1125, 37.8379)
Luminance	0.0711 (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

#423BA8 #A1A83B

analogous

#3B6BA8 #423BA8 #793BA8

triadic

#423BA8 #A8423B #3BA842

tetradic

#423BA8 #A83B6B #A1A83B #3BA879

square

#423BA8 #A83B6B #A1A83B #3BA879

split-complementary

#423BA8 #A8793B #6BA83B

monochromatic

#1E1B4D #302B7B #423BA8 #625BC5 #8D88D5

Accessibility & contrast

On white

8.67

#423BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#423BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BA8

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BA8	#FFFFFF	#000000	##FFFFFF
##423BA8	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0047A6

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423ba8;
/* rgb */ color: rgb(66, 59, 168);
/* oklch */ color: oklch(42.9% 0.169 279.4);

Tailwind

colors: {
  custom: {
    50: '#8171c3',
    500: '#423ba8',
    950: '#000000',
  },
}

SCSS

$custom: #423ba8;
$custom-light: #8171c3;
$custom-dark: #000000;

JSON

{
  "hex": "#423ba8",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 168
  },
  "hsl": {
    "h": 243.853,
    "s": 48.018,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42916,
    "c": 0.1685,
    "h": 279.4
  },
  "luminance": 0.07113
}

Semantic roles & 50–950 ramp

primary

#423BA8

secondary

#BBC07F

accent

#D850CF

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423BA8

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

Preview Lab → · Contrast checker → · Palette generator →