#424399#424399

#424399 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.1% C 0.137 H 278.5°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#424399
RGB	rgb(66, 67, 153)
HSL	hsl(239, 40%, 43%)
HSV	hsv(239, 57%, 60%)
CMYK	cmyk(56.9%, 56.2%, 0%, 40%)
CIE-LAB	lab(32.86, 25.46, -47.40)
CIE-LCH	lch(32.86, 53.81, 298.25°)
OKLab	oklab(43.14% 0.0202 -0.1358)
OKLCH	oklch(43.14% 0.137 278.5)
XYZ	xyz(10.0019, 7.4718, 31.0460)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424399 #999842

analogous

#426F99 #424399 #6C4299

triadic

#424399 #994243 #439942

tetradic

#424399 #99426F #999842 #42996C

square

#424399 #99426F #999842 #42996C

split-complementary

#424399 #996C42 #6F9942

monochromatic

#1D1E43 #30306E #424399 #5E60BA #898ACC

Accessibility & contrast

On white

8.42

#424399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#424399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424399

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424399	#FFFFFF	#000000	##FFFFFF
##424399	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07519C

Deuteranopia (green-blind)

#004A97

Tritanopia (blue-blind)

#145767

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #424399;
/* rgb */ color: rgb(66, 67, 153);
/* oklch */ color: oklch(43.1% 0.137 278.5);

Tailwind

colors: {
  custom: {
    50: '#7e77b8',
    500: '#424399',
    950: '#000000',
  },
}

SCSS

$custom: #424399;
$custom-light: #7e77b8;
$custom-dark: #000000;

JSON

{
  "hex": "#424399",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 153
  },
  "hsl": {
    "h": 239.31,
    "s": 39.726,
    "l": 42.941
  },
  "oklch": {
    "l": 0.43135,
    "c": 0.13725,
    "h": 278.5
  },
  "luminance": 0.07472
}

Semantic roles & 50–950 ramp

primary

#424399

secondary

#B7B680

accent

#CE58D0

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #424399

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

Preview Lab → · Contrast checker → · Palette generator →