#423C8A#423C8A

#423C8A is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.126 H 282.7°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#423C8A
RGB	rgb(66, 60, 138)
HSL	hsl(245, 39%, 39%)
HSV	hsv(245, 57%, 54%)
CMYK	cmyk(52.2%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(29.97, 24.99, -42.87)
CIE-LCH	lch(29.97, 49.62, 300.24°)
OKLab	oklab(40.64% 0.0277 -0.1225)
OKLCH	oklch(40.64% 0.126 282.7)
XYZ	xyz(8.4487, 6.2245, 24.7961)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423C8A #848A3C

analogous

#3C5D8A #423C8A #693C8A

triadic

#423C8A #8A423C #3C8A42

tetradic

#423C8A #8A3C5D #848A3C #3C8A69

square

#423C8A #8A3C5D #848A3C #3C8A69

split-complementary

#423C8A #8A693C #5D8A3C

monochromatic

#191735 #2E295F #423C8A #5850B3 #817BC6

Accessibility & contrast

On white

9.35

#423C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#423C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423C8A

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423C8A	#FFFFFF	#000000	##FFFFFF
##423C8A	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C498D

Deuteranopia (green-blind)

#034488

Tritanopia (blue-blind)

#264E5D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #423c8a;
/* rgb */ color: rgb(66, 60, 138);
/* oklch */ color: oklch(40.6% 0.126 282.7);

Tailwind

colors: {
  custom: {
    50: '#7c72ad',
    500: '#423c8a',
    950: '#000000',
  },
}

SCSS

$custom: #423c8a;
$custom-light: #7c72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#423c8a",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 244.615,
    "s": 39.394,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40644,
    "c": 0.12558,
    "h": 282.7
  },
  "luminance": 0.06225
}

Semantic roles & 50–950 ramp

primary

#423C8A

secondary

#ABAF73

accent

#CF59C6

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #423C8A

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

Preview Lab → · Contrast checker → · Palette generator →