#423EB8#423EB8

#423EB8 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.8% C 0.186 H 277.3°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#423EB8
RGB	rgb(66, 62, 184)
HSL	hsl(242, 50%, 48%)
HSV	hsv(242, 66%, 72%)
CMYK	cmyk(64.1%, 66.3%, 0%, 27.8%)
CIE-LAB	lab(34.11, 39.06, -63.92)
CIE-LCH	lch(34.11, 74.91, 301.43°)
OKLab	oklab(44.83% 0.0235 -0.1843)
OKLCH	oklch(44.83% 0.186 277.3)
XYZ	xyz(12.6183, 8.0632, 46.2295)
Luminance	0.0806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.07

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423EB8 #B4B83E

analogous

#3E77B8 #423EB8 #7F3EB8

triadic

#423EB8 #B8423E #3EB842

tetradic

#423EB8 #B83E77 #B4B83E #3EB87F

square

#423EB8 #B83E77 #B4B83E #3EB87F

split-complementary

#423EB8 #B87F3E #77B83E

monochromatic

#211F5C #322F8A #423EB8 #6B67CC #9795DB

Accessibility & contrast

On white

8.04

#423EB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#423EB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EB8

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EB8	#FFFFFF	#000000	##FFFFFF
##423EB8	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BC

Deuteranopia (green-blind)

#004BB6

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423eb8;
/* rgb */ color: rgb(66, 62, 184);
/* oklch */ color: oklch(44.8% 0.186 277.3);

Tailwind

colors: {
  custom: {
    50: '#8474ce',
    500: '#423eb8',
    950: '#000000',
  },
}

SCSS

$custom: #423eb8;
$custom-light: #8474ce;
$custom-dark: #000000;

JSON

{
  "hex": "#423eb8",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 184
  },
  "hsl": {
    "h": 241.967,
    "s": 49.593,
    "l": 48.235
  },
  "oklch": {
    "l": 0.4483,
    "c": 0.1858,
    "h": 277.3
  },
  "luminance": 0.08064
}

Semantic roles & 50–950 ramp

primary

#423EB8

secondary

#C5C78B

accent

#D94FD5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423EB8

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

Preview Lab → · Contrast checker → · Palette generator →