#424EB5#424EB5

#424EB5 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.4% C 0.162 H 273.5°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#424EB5
RGB	rgb(66, 78, 181)
HSL	hsl(234, 47%, 48%)
HSV	hsv(234, 64%, 71%)
CMYK	cmyk(63.5%, 56.9%, 0%, 29%)
CIE-LAB	lab(37.74, 28.01, -56.24)
CIE-LCH	lch(37.74, 62.83, 296.47°)
OKLab	oklab(47.42% 0.0099 -0.1617)
OKLCH	oklch(47.42% 0.162 273.5)
XYZ	xyz(13.3089, 9.9421, 44.9248)
Luminance	0.0994 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424EB5 #B5A942

analogous

#4287B5 #424EB5 #6F42B5

triadic

#424EB5 #B5424E #4EB542

tetradic

#424EB5 #B54287 #B5A942 #42B56F

square

#424EB5 #B54287 #B5A942 #42B56F

split-complementary

#424EB5 #B56F42 #87B542

monochromatic

#21275B #323B88 #424EB5 #6B75C9 #989FD9

Accessibility & contrast

On white

7.03

#424EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#424EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424EB5

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424EB5	#FFFFFF	#000000	##FFFFFF
##424EB5	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB8

Deuteranopia (green-blind)

#0054B3

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424eb5;
/* rgb */ color: rgb(66, 78, 181);
/* oklch */ color: oklch(47.4% 0.162 273.5);

Tailwind

colors: {
  custom: {
    50: '#837fcc',
    500: '#424eb5',
    950: '#000000',
  },
}

SCSS

$custom: #424eb5;
$custom-light: #837fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#424eb5",
  "rgb": {
    "r": 66,
    "g": 78,
    "b": 181
  },
  "hsl": {
    "h": 233.739,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47422,
    "c": 0.16196,
    "h": 273.5
  },
  "luminance": 0.09943
}

Semantic roles & 50–950 ramp

primary

#424EB5

secondary

#C5BF8E

accent

#C852D6

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #424EB5

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

Preview Lab → · Contrast checker → · Palette generator →