#423BBD#423BBD

#423BBD is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.8% C 0.196 H 277.4°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#423BBD
RGB	rgb(66, 59, 189)
HSL	hsl(243, 52%, 49%)
HSV	hsv(243, 69%, 74%)
CMYK	cmyk(65.1%, 68.8%, 0%, 25.9%)
CIE-LAB	lab(33.90, 42.49, -67.22)
CIE-LCH	lch(33.90, 79.52, 302.30°)
OKLab	oklab(44.81% 0.0251 -0.194)
OKLCH	oklch(44.81% 0.196 277.4)
XYZ	xyz(12.9931, 7.9592, 48.9858)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.64

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423BBD #B6BD3B

analogous

#3B75BD #423BBD #833BBD

triadic

#423BBD #BD423B #3BBD42

tetradic

#423BBD #BD3B75 #B6BD3B #3BBD83

square

#423BBD #BD3B75 #B6BD3B #3BBD83

split-complementary

#423BBD #BD833B #75BD3B

monochromatic

#211E60 #322C8E #423BBD #6C66CF #9995DE

Accessibility & contrast

On white

8.10

#423BBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#423BBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BBD

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BBD	#FFFFFF	#000000	##FFFFFF
##423BBD	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C1

Deuteranopia (green-blind)

#004ABB

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423bbd;
/* rgb */ color: rgb(66, 59, 189);
/* oklch */ color: oklch(44.8% 0.196 277.4);

Tailwind

colors: {
  custom: {
    50: '#8572d2',
    500: '#423bbd',
    950: '#000000',
  },
}

SCSS

$custom: #423bbd;
$custom-light: #8572d2;
$custom-dark: #000000;

JSON

{
  "hex": "#423bbd",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 189
  },
  "hsl": {
    "h": 243.231,
    "s": 52.419,
    "l": 48.627
  },
  "oklch": {
    "l": 0.4481,
    "c": 0.19561,
    "h": 277.4
  },
  "luminance": 0.0796
}

Semantic roles & 50–950 ramp

primary

#423BBD

secondary

#C6C98B

accent

#DC4CD4

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423BBD

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

Preview Lab → · Contrast checker → · Palette generator →