#423BBF#423BBF

#423BBF is a dark, vivid blue. Relative luminance 0.080; OKLCH L 45.0% C 0.198 H 277.2°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#423BBF
RGB	rgb(66, 59, 191)
HSL	hsl(243, 53%, 49%)
HSV	hsv(243, 69%, 75%)
CMYK	cmyk(65.4%, 69.1%, 0%, 25.1%)
CIE-LAB	lab(34.08, 43.14, -68.10)
CIE-LCH	lch(34.08, 80.61, 302.36°)
OKLab	oklab(45% 0.0249 -0.1966)
OKLCH	oklch(45% 0.198 277.2)
XYZ	xyz(13.2116, 8.0467, 50.1370)
Luminance	0.0805 (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

#423BBF #B8BF3B

analogous

#3B76BF #423BBF #843BBF

triadic

#423BBF #BF423B #3BBF42

tetradic

#423BBF #BF3B76 #B8BF3B #3BBF84

square

#423BBF #BF3B76 #B8BF3B #3BBF84

split-complementary

#423BBF #BF843B #76BF3B

monochromatic

#221E61 #322D90 #423BBF #6D67D0 #9A96DF

Accessibility & contrast

On white

8.05

#423BBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#423BBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BBF

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BBF	#FFFFFF	#000000	##FFFFFF
##423BBF	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C3

Deuteranopia (green-blind)

#004ABD

Tritanopia (blue-blind)

#005F78

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423bbf;
/* rgb */ color: rgb(66, 59, 191);
/* oklch */ color: oklch(45.0% 0.198 277.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#423bbf",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 191
  },
  "hsl": {
    "h": 243.182,
    "s": 52.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.44997,
    "c": 0.19812,
    "h": 277.2
  },
  "luminance": 0.08048
}

Semantic roles & 50–950 ramp

primary

#423BBF

secondary

#C7CA8C

accent

#DC4CD5

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #423BBF

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

Preview Lab → · Contrast checker → · Palette generator →