#423CBA#423CBA

#423CBA is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.7% C 0.191 H 277.5°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#423CBA
RGB	rgb(66, 60, 186)
HSL	hsl(243, 51%, 48%)
HSV	hsv(243, 68%, 73%)
CMYK	cmyk(64.5%, 67.7%, 0%, 27.1%)
CIE-LAB	lab(33.85, 40.92, -65.54)
CIE-LCH	lch(33.85, 77.26, 301.98°)
OKLab	oklab(44.69% 0.0248 -0.1891)
OKLCH	oklch(44.69% 0.191 277.5)
XYZ	xyz(12.7227, 7.9341, 47.3058)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.37

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423CBA #B4BA3C

analogous

#3C75BA #423CBA #813CBA

triadic

#423CBA #BA423C #3CBA42

tetradic

#423CBA #BA3C75 #B4BA3C #3CBA81

square

#423CBA #BA3C75 #B4BA3C #3CBA81

split-complementary

#423CBA #BA813C #75BA3C

monochromatic

#211E5D #322D8C #423CBA #6B66CE #9794DC

Accessibility & contrast

On white

8.12

#423CBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#423CBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CBA

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CBA	#FFFFFF	#000000	##FFFFFF
##423CBA	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BE

Deuteranopia (green-blind)

#004AB8

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423cba;
/* rgb */ color: rgb(66, 60, 186);
/* oklch */ color: oklch(44.7% 0.191 277.5);

Tailwind

colors: {
  custom: {
    50: '#8573d0',
    500: '#423cba',
    950: '#000000',
  },
}

SCSS

$custom: #423cba;
$custom-light: #8573d0;
$custom-dark: #000000;

JSON

{
  "hex": "#423cba",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 186
  },
  "hsl": {
    "h": 242.857,
    "s": 51.22,
    "l": 48.235
  },
  "oklch": {
    "l": 0.4469,
    "c": 0.19069,
    "h": 277.5
  },
  "luminance": 0.07935
}

Semantic roles & 50–950 ramp

primary

#423CBA

secondary

#C5C88A

accent

#DB4DD4

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423CBA

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

Preview Lab → · Contrast checker → · Palette generator →