#423ABC#423ABC

#423ABC is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.6% C 0.195 H 277.6°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#423ABC
RGB	rgb(66, 58, 188)
HSL	hsl(244, 53%, 48%)
HSV	hsv(244, 69%, 74%)
CMYK	cmyk(64.9%, 69.1%, 0%, 26.3%)
CIE-LAB	lab(33.59, 42.75, -67.13)
CIE-LCH	lch(33.59, 79.59, 302.49°)
OKLab	oklab(44.56% 0.026 -0.1937)
OKLCH	oklch(44.56% 0.195 277.6)
XYZ	xyz(12.8340, 7.8141, 48.3992)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.76

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423ABC #B4BC3A

analogous

#3A73BC #423ABC #833ABC

triadic

#423ABC #BC423A #3ABC42

tetradic

#423ABC #BC3A73 #B4BC3A #3ABC83

square

#423ABC #BC3A73 #B4BC3A #3ABC83

split-complementary

#423ABC #BC833A #73BC3A

monochromatic

#211D5E #322C8D #423ABC #6B64CF #9793DE

Accessibility & contrast

On white

8.19

#423ABC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#423ABC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423ABC

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423ABC	#FFFFFF	#000000	##FFFFFF
##423ABC	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C0

Deuteranopia (green-blind)

#004ABA

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423abc;
/* rgb */ color: rgb(66, 58, 188);
/* oklch */ color: oklch(44.6% 0.195 277.6);

Tailwind

colors: {
  custom: {
    50: '#8571d1',
    500: '#423abc',
    950: '#000000',
  },
}

SCSS

$custom: #423abc;
$custom-light: #8571d1;
$custom-dark: #000000;

JSON

{
  "hex": "#423abc",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 188
  },
  "hsl": {
    "h": 243.692,
    "s": 52.846,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44563,
    "c": 0.19547,
    "h": 277.6
  },
  "luminance": 0.07815
}

Semantic roles & 50–950 ramp

primary

#423ABC

secondary

#C5C989

accent

#DC4CD3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423ABC

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

Preview Lab → · Contrast checker → · Palette generator →