#423AA8#423AA8

#423AA8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.170 H 279.7°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#423AA8
RGB	rgb(66, 58, 168)
HSL	hsl(244, 49%, 44%)
HSV	hsv(244, 65%, 66%)
CMYK	cmyk(60.7%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(31.83, 36.20, -58.12)
CIE-LCH	lch(31.83, 68.47, 301.91°)
OKLab	oklab(42.75% 0.0285 -0.1673)
OKLCH	oklch(42.75% 0.17 279.7)
XYZ	xyz(10.8255, 7.0107, 37.8209)
Luminance	0.0701 (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

#423AA8 #A0A83A

analogous

#3A69A8 #423AA8 #793AA8

triadic

#423AA8 #A8423A #3AA842

tetradic

#423AA8 #A83A69 #A0A83A #3AA879

square

#423AA8 #A83A69 #A0A83A #3AA879

split-complementary

#423AA8 #A8793A #69A83A

monochromatic

#1E1B4D #302A7B #423AA8 #6159C6 #8D87D6

Accessibility & contrast

On white

8.74

#423AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#423AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423AA8

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423AA8	#FFFFFF	#000000	##FFFFFF
##423AA8	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0047A6

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423aa8;
/* rgb */ color: rgb(66, 58, 168);
/* oklch */ color: oklch(42.7% 0.170 279.7);

Tailwind

colors: {
  custom: {
    50: '#8271c3',
    500: '#423aa8',
    950: '#000000',
  },
}

SCSS

$custom: #423aa8;
$custom-light: #8271c3;
$custom-dark: #000000;

JSON

{
  "hex": "#423aa8",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 244.364,
    "s": 48.673,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42748,
    "c": 0.16975,
    "h": 279.7
  },
  "luminance": 0.07012
}

Semantic roles & 50–950 ramp

primary

#423AA8

secondary

#BBC07E

accent

#D850CE

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #423AA8

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

Preview Lab → · Contrast checker → · Palette generator →