#423EB5#423EB5

#423EB5 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.6% C 0.182 H 277.5°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#423EB5
RGB	rgb(66, 62, 181)
HSL	hsl(242, 49%, 48%)
HSV	hsv(242, 66%, 71%)
CMYK	cmyk(63.5%, 65.7%, 0%, 29%)
CIE-LAB	lab(33.85, 38.06, -62.57)
CIE-LCH	lch(33.85, 73.23, 301.32°)
OKLab	oklab(44.56% 0.0238 -0.1803)
OKLCH	oklch(44.56% 0.182 277.5)
XYZ	xyz(12.3072, 7.9387, 44.5909)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.06

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423EB5 #B1B53E

analogous

#3E75B5 #423EB5 #7E3EB5

triadic

#423EB5 #B5423E #3EB542

tetradic

#423EB5 #B53E75 #B1B53E #3EB57E

square

#423EB5 #B53E75 #B1B53E #3EB57E

split-complementary

#423EB5 #B57E3E #75B53E

monochromatic

#211F5A #312E87 #423EB5 #6966CA #9693DA

Accessibility & contrast

On white

8.11

#423EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#423EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EB5

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EB5	#FFFFFF	#000000	##FFFFFF
##423EB5	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B9

Deuteranopia (green-blind)

#004BB3

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423eb5;
/* rgb */ color: rgb(66, 62, 181);
/* oklch */ color: oklch(44.6% 0.182 277.5);

Tailwind

colors: {
  custom: {
    50: '#8474cc',
    500: '#423eb5',
    950: '#000000',
  },
}

SCSS

$custom: #423eb5;
$custom-light: #8474cc;
$custom-dark: #000000;

JSON

{
  "hex": "#423eb5",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 181
  },
  "hsl": {
    "h": 242.017,
    "s": 48.971,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44562,
    "c": 0.18192,
    "h": 277.5
  },
  "luminance": 0.0794
}

Semantic roles & 50–950 ramp

primary

#423EB5

secondary

#C3C589

accent

#D94FD4

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423EB5

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

Preview Lab → · Contrast checker → · Palette generator →