#423BBE#423BBE

#423BBE is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.9% C 0.197 H 277.3°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#423BBE
RGB	rgb(66, 59, 190)
HSL	hsl(243, 53%, 49%)
HSV	hsv(243, 69%, 75%)
CMYK	cmyk(65.3%, 68.9%, 0%, 25.5%)
CIE-LAB	lab(33.99, 42.82, -67.66)
CIE-LCH	lch(33.99, 80.07, 302.33°)
OKLab	oklab(44.9% 0.025 -0.1953)
OKLCH	oklch(44.9% 0.197 277.3)
XYZ	xyz(13.1020, 8.0028, 49.5595)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423BBE #B7BE3B

analogous

#3B76BE #423BBE #843BBE

triadic

#423BBE #BE423B #3BBE42

tetradic

#423BBE #BE3B76 #B7BE3B #3BBE84

square

#423BBE #BE3B76 #B7BE3B #3BBE84

split-complementary

#423BBE #BE843B #76BE3B

monochromatic

#221E61 #322C8F #423BBE #6C67D0 #9995DE

Accessibility & contrast

On white

8.07

#423BBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#423BBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BBE

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BBE	#FFFFFF	#000000	##FFFFFF
##423BBE	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C2

Deuteranopia (green-blind)

#004ABC

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423bbe;
/* rgb */ color: rgb(66, 59, 190);
/* oklch */ color: oklch(44.9% 0.197 277.3);

Tailwind

colors: {
  custom: {
    50: '#8672d3',
    500: '#423bbe',
    950: '#000000',
  },
}

SCSS

$custom: #423bbe;
$custom-light: #8672d3;
$custom-dark: #000000;

JSON

{
  "hex": "#423bbe",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 190
  },
  "hsl": {
    "h": 243.206,
    "s": 52.61,
    "l": 48.824
  },
  "oklch": {
    "l": 0.44903,
    "c": 0.19687,
    "h": 277.3
  },
  "luminance": 0.08004
}

Semantic roles & 50–950 ramp

primary

#423BBE

secondary

#C6CA8B

accent

#DC4CD4

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423BBE

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

Preview Lab → · Contrast checker → · Palette generator →