#423F84#423F84

#423F84 is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.8% C 0.112 H 282.2°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#423F84
RGB	rgb(66, 63, 132)
HSL	hsl(243, 35%, 38%)
HSV	hsv(243, 52%, 52%)
CMYK	cmyk(50%, 52.3%, 0%, 48.2%)
CIE-LAB	lab(30.35, 21.05, -38.55)
CIE-LCH	lch(30.35, 43.92, 298.63°)
OKLab	oklab(40.79% 0.0237 -0.1098)
OKLCH	oklch(40.79% 0.112 282.2)
XYZ	xyz(8.1879, 6.3788, 22.6251)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F84 #81843F

analogous

#3F5E84 #423F84 #643F84

triadic

#423F84 #84423F #3F8442

tetradic

#423F84 #843F5E #81843F #3F8464

square

#423F84 #843F5E #81843F #3F8464

split-complementary

#423F84 #84643F #5E843F

monochromatic

#191731 #2D2B5B #423F84 #5753AD #807DC1

Accessibility & contrast

On white

9.23

#423F84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#423F84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F84

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F84	#FFFFFF	#000000	##FFFFFF
##423F84	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4A86

Deuteranopia (green-blind)

#1A4582

Tritanopia (blue-blind)

#2A4E5B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #423f84;
/* rgb */ color: rgb(66, 63, 132);
/* oklch */ color: oklch(40.8% 0.112 282.2);

Tailwind

colors: {
  custom: {
    50: '#7b74a8',
    500: '#423f84',
    950: '#000000',
  },
}

SCSS

$custom: #423f84;
$custom-light: #7b74a8;
$custom-dark: #000000;

JSON

{
  "hex": "#423f84",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 132
  },
  "hsl": {
    "h": 242.609,
    "s": 35.385,
    "l": 38.235
  },
  "oklch": {
    "l": 0.40793,
    "c": 0.11228,
    "h": 282.2
  },
  "luminance": 0.06379
}

Semantic roles & 50–950 ramp

primary

#423F84

secondary

#A9AB74

accent

#CB5CC7

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #423F84

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

Preview Lab → · Contrast checker → · Palette generator →