#423C8D#423C8D

#423C8D is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.130 H 282.3°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#423C8D
RGB	rgb(66, 60, 141)
HSL	hsl(244, 40%, 39%)
HSV	hsv(244, 57%, 55%)
CMYK	cmyk(53.2%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(30.19, 25.98, -44.38)
CIE-LCH	lch(30.19, 51.42, 300.35°)
OKLab	oklab(40.87% 0.0278 -0.1269)
OKLCH	oklch(40.87% 0.13 282.3)
XYZ	xyz(8.6689, 6.3126, 25.9558)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423C8D #878D3C

analogous

#3C5F8D #423C8D #6B3C8D

triadic

#423C8D #8D423C #3C8D42

tetradic

#423C8D #8D3C5F #878D3C #3C8D6B

square

#423C8D #8D3C5F #878D3C #3C8D6B

split-complementary

#423C8D #8D6B3C #5F8D3C

monochromatic

#1A1737 #2E2A62 #423C8D #5951B5 #827CC7

Accessibility & contrast

On white

9.28

#423C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#423C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423C8D

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423C8D	#FFFFFF	#000000	##FFFFFF
##423C8D	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044A90

Deuteranopia (green-blind)

#00448B

Tritanopia (blue-blind)

#244E5E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #423c8d;
/* rgb */ color: rgb(66, 60, 141);
/* oklch */ color: oklch(40.9% 0.130 282.3);

Tailwind

colors: {
  custom: {
    50: '#7d72af',
    500: '#423c8d',
    950: '#000000',
  },
}

SCSS

$custom: #423c8d;
$custom-light: #7d72af;
$custom-dark: #000000;

JSON

{
  "hex": "#423c8d",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 244.444,
    "s": 40.299,
    "l": 39.412
  },
  "oklch": {
    "l": 0.40873,
    "c": 0.12991,
    "h": 282.3
  },
  "luminance": 0.06313
}

Semantic roles & 50–950 ramp

primary

#423C8D

secondary

#ACB174

accent

#D058C7

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #423C8D

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

Preview Lab → · Contrast checker → · Palette generator →