#423BB2#423BB2

#423BB2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.182 H 278.4°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#423BB2
RGB	rgb(66, 59, 178)
HSL	hsl(244, 50%, 46%)
HSV	hsv(244, 67%, 70%)
CMYK	cmyk(62.9%, 66.9%, 0%, 30.2%)
CIE-LAB	lab(32.92, 38.89, -62.32)
CIE-LCH	lch(32.92, 73.46, 301.96°)
OKLab	oklab(43.8% 0.0266 -0.1796)
OKLCH	oklch(43.8% 0.182 278.4)
XYZ	xyz(11.8440, 7.4996, 42.9343)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.51

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423BB2 #ABB23B

analogous

#3B70B2 #423BB2 #7E3BB2

triadic

#423BB2 #B2423B #3BB242

tetradic

#423BB2 #B23B70 #ABB23B #3BB27E

square

#423BB2 #B23B70 #ABB23B #3BB27E

split-complementary

#423BB2 #B27E3B #70B23B

monochromatic

#201D56 #312C84 #423BB2 #6660CA #928EDA

Accessibility & contrast

On white

8.40

#423BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#423BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BB2

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BB2	#FFFFFF	#000000	##FFFFFF
##423BB2	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #423bb2;
/* rgb */ color: rgb(66, 59, 178);
/* oklch */ color: oklch(43.8% 0.182 278.4);

Tailwind

colors: {
  custom: {
    50: '#8372ca',
    500: '#423bb2',
    950: '#000000',
  },
}

SCSS

$custom: #423bb2;
$custom-light: #8372ca;
$custom-dark: #000000;

JSON

{
  "hex": "#423bb2",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 178
  },
  "hsl": {
    "h": 243.529,
    "s": 50.211,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43802,
    "c": 0.1816,
    "h": 278.4
  },
  "luminance": 0.07501
}

Semantic roles & 50–950 ramp

primary

#423BB2

secondary

#C0C485

accent

#DA4ED2

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423BB2

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

Preview Lab → · Contrast checker → · Palette generator →