#424EB4#424EB4

#424EB4 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.3% C 0.161 H 273.5°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#424EB4
RGB	rgb(66, 78, 180)
HSL	hsl(234, 46%, 48%)
HSV	hsv(234, 63%, 71%)
CMYK	cmyk(63.3%, 56.7%, 0%, 29.4%)
CIE-LAB	lab(37.66, 27.66, -55.77)
CIE-LCH	lch(37.66, 62.25, 296.38°)
OKLab	oklab(47.34% 0.0099 -0.1603)
OKLCH	oklch(47.34% 0.161 273.5)
XYZ	xyz(13.2066, 9.9012, 44.3863)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424EB4 #B4A842

analogous

#4287B4 #424EB4 #6F42B4

triadic

#424EB4 #B4424E #4EB442

tetradic

#424EB4 #B44287 #B4A842 #42B46F

square

#424EB4 #B44287 #B4A842 #42B46F

split-complementary

#424EB4 #B46F42 #87B442

monochromatic

#21275A #323B87 #424EB4 #6B75C9 #979ED9

Accessibility & contrast

On white

7.05

#424EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#424EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424EB4

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424EB4	#FFFFFF	#000000	##FFFFFF
##424EB4	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424eb4;
/* rgb */ color: rgb(66, 78, 180);
/* oklch */ color: oklch(47.3% 0.161 273.5);

Tailwind

colors: {
  custom: {
    50: '#827fcb',
    500: '#424eb4',
    950: '#000000',
  },
}

SCSS

$custom: #424eb4;
$custom-light: #827fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#424eb4",
  "rgb": {
    "r": 66,
    "g": 78,
    "b": 180
  },
  "hsl": {
    "h": 233.684,
    "s": 46.341,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47344,
    "c": 0.16057,
    "h": 273.5
  },
  "luminance": 0.09902
}

Semantic roles & 50–950 ramp

primary

#424EB4

secondary

#C5BF8D

accent

#C852D6

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #424EB4

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

Preview Lab → · Contrast checker → · Palette generator →