#423FAF#423FAF

#423FAF is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.2% C 0.173 H 277.8°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#423FAF
RGB	rgb(66, 63, 175)
HSL	hsl(242, 47%, 47%)
HSV	hsv(242, 64%, 69%)
CMYK	cmyk(62.3%, 64%, 0%, 31.4%)
CIE-LAB	lab(33.58, 35.45, -59.45)
CIE-LCH	lch(33.58, 69.22, 300.80°)
OKLab	oklab(44.2% 0.0235 -0.1712)
OKLCH	oklch(44.2% 0.173 277.8)
XYZ	xyz(11.7596, 7.8075, 41.4364)
Luminance	0.0781 (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

#423FAF #ACAF3F

analogous

#3F74AF #423FAF #7A3FAF

triadic

#423FAF #AF423F #3FAF42

tetradic

#423FAF #AF3F74 #ACAF3F #3FAF7A

square

#423FAF #AF3F74 #ACAF3F #3FAF7A

split-complementary

#423FAF #AF7A3F #74AF3F

monochromatic

#201F55 #312F82 #423FAF #6764C7 #9391D7

Accessibility & contrast

On white

8.20

#423FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#423FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FAF

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FAF	#FFFFFF	#000000	##FFFFFF
##423FAF	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B3

Deuteranopia (green-blind)

#004AAD

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423faf;
/* rgb */ color: rgb(66, 63, 175);
/* oklch */ color: oklch(44.2% 0.173 277.8);

Tailwind

colors: {
  custom: {
    50: '#8274c8',
    500: '#423faf',
    950: '#000000',
  },
}

SCSS

$custom: #423faf;
$custom-light: #8274c8;
$custom-dark: #000000;

JSON

{
  "hex": "#423faf",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 241.607,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44204,
    "c": 0.17283,
    "h": 277.8
  },
  "luminance": 0.07808
}

Semantic roles & 50–950 ramp

primary

#423FAF

secondary

#C1C387

accent

#D751D3

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423FAF

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

Preview Lab → · Contrast checker → · Palette generator →