#423FAA#423FAA

#423FAA is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.8% C 0.166 H 278.3°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#423FAA
RGB	rgb(66, 63, 170)
HSL	hsl(242, 46%, 46%)
HSV	hsv(242, 63%, 67%)
CMYK	cmyk(61.2%, 62.9%, 0%, 33.3%)
CIE-LAB	lab(33.17, 33.77, -57.14)
CIE-LCH	lch(33.17, 66.37, 300.58°)
OKLab	oklab(43.78% 0.0239 -0.1644)
OKLCH	oklch(43.78% 0.166 278.3)
XYZ	xyz(11.2776, 7.6147, 38.8979)
Luminance	0.0762 (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

#423FAA #A7AA3F

analogous

#3F71AA #423FAA #773FAA

triadic

#423FAA #AA423F #3FAA42

tetradic

#423FAA #AA3F71 #A7AA3F #3FAA77

square

#423FAA #AA3F71 #A7AA3F #3FAA77

split-complementary

#423FAA #AA773F #71AA3F

monochromatic

#1F1E51 #312E7D #423FAA #6462C5 #908ED5

Accessibility & contrast

On white

8.32

#423FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#423FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FAA

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FAA	#FFFFFF	#000000	##FFFFFF
##423FAA	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AD

Deuteranopia (green-blind)

#004AA8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423faa;
/* rgb */ color: rgb(66, 63, 170);
/* oklch */ color: oklch(43.8% 0.166 278.3);

Tailwind

colors: {
  custom: {
    50: '#8274c4',
    500: '#423faa',
    950: '#000000',
  },
}

SCSS

$custom: #423faa;
$custom-light: #8274c4;
$custom-dark: #000000;

JSON

{
  "hex": "#423faa",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 170
  },
  "hsl": {
    "h": 241.682,
    "s": 45.923,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43775,
    "c": 0.16616,
    "h": 278.3
  },
  "luminance": 0.07616
}

Semantic roles & 50–950 ramp

primary

#423FAA

secondary

#BEC085

accent

#D652D2

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423FAA

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

Preview Lab → · Contrast checker → · Palette generator →