#423CBC#423CBC

#423CBC is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.9% C 0.193 H 277.3°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#423CBC
RGB	rgb(66, 60, 188)
HSL	hsl(243, 52%, 49%)
HSV	hsv(243, 68%, 74%)
CMYK	cmyk(64.9%, 68.1%, 0%, 26.3%)
CIE-LAB	lab(34.02, 41.58, -66.42)
CIE-LCH	lch(34.02, 78.36, 302.04°)
OKLab	oklab(44.87% 0.0246 -0.1917)
OKLCH	oklch(44.87% 0.193 277.3)
XYZ	xyz(12.9368, 8.0197, 48.4334)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.44

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423CBC #B6BC3C

analogous

#3C76BC #423CBC #823CBC

triadic

#423CBC #BC423C #3CBC42

tetradic

#423CBC #BC3C76 #B6BC3C #3CBC82

square

#423CBC #BC3C76 #B6BC3C #3CBC82

split-complementary

#423CBC #BC823C #76BC3C

monochromatic

#211E5F #322D8E #423CBC #6C67CE #9995DD

Accessibility & contrast

On white

8.06

#423CBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#423CBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CBC

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CBC	#FFFFFF	#000000	##FFFFFF
##423CBC	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C0

Deuteranopia (green-blind)

#004BBA

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423cbc;
/* rgb */ color: rgb(66, 60, 188);
/* oklch */ color: oklch(44.9% 0.193 277.3);

Tailwind

colors: {
  custom: {
    50: '#8573d1',
    500: '#423cbc',
    950: '#000000',
  },
}

SCSS

$custom: #423cbc;
$custom-light: #8573d1;
$custom-dark: #000000;

JSON

{
  "hex": "#423cbc",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 188
  },
  "hsl": {
    "h": 242.813,
    "s": 51.613,
    "l": 48.627
  },
  "oklch": {
    "l": 0.44873,
    "c": 0.19323,
    "h": 277.3
  },
  "luminance": 0.08021
}

Semantic roles & 50–950 ramp

primary

#423CBC

secondary

#C6C98B

accent

#DB4DD4

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423CBC

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

Preview Lab → · Contrast checker → · Palette generator →