#423EB7#423EB7

#423EB7 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.185 H 277.4°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#423EB7
RGB	rgb(66, 62, 183)
HSL	hsl(242, 49%, 48%)
HSV	hsv(242, 66%, 72%)
CMYK	cmyk(63.9%, 66.1%, 0%, 28.2%)
CIE-LAB	lab(34.03, 38.73, -63.47)
CIE-LCH	lch(34.03, 74.35, 301.39°)
OKLab	oklab(44.74% 0.0236 -0.183)
OKLCH	oklch(44.74% 0.185 277.4)
XYZ	xyz(12.5139, 8.0214, 45.6794)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.06

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423EB7 #B3B73E

analogous

#3E77B7 #423EB7 #7E3EB7

triadic

#423EB7 #B7423E #3EB742

tetradic

#423EB7 #B73E77 #B3B73E #3EB77E

square

#423EB7 #B73E77 #B3B73E #3EB77E

split-complementary

#423EB7 #B77E3E #77B73E

monochromatic

#211F5C #322F89 #423EB7 #6A67CB #9794DB

Accessibility & contrast

On white

8.06

#423EB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#423EB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EB7

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EB7	#FFFFFF	#000000	##FFFFFF
##423EB7	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#004BB5

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #423eb7;
/* rgb */ color: rgb(66, 62, 183);
/* oklch */ color: oklch(44.7% 0.185 277.4);

Tailwind

colors: {
  custom: {
    50: '#8474ce',
    500: '#423eb7',
    950: '#000000',
  },
}

SCSS

$custom: #423eb7;
$custom-light: #8474ce;
$custom-dark: #000000;

JSON

{
  "hex": "#423eb7",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 183
  },
  "hsl": {
    "h": 241.983,
    "s": 49.388,
    "l": 48.039
  },
  "oklch": {
    "l": 0.4474,
    "c": 0.18452,
    "h": 277.4
  },
  "luminance": 0.08022
}

Semantic roles & 50–950 ramp

primary

#423EB7

secondary

#C4C68A

accent

#D94FD4

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423EB7

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

Preview Lab → · Contrast checker → · Palette generator →