#424FB4#424FB4

#424FB4 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.5% C 0.159 H 273.2°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#424FB4
RGB	rgb(66, 79, 180)
HSL	hsl(233, 46%, 48%)
HSV	hsv(233, 63%, 71%)
CMYK	cmyk(63.3%, 56.1%, 0%, 29.4%)
CIE-LAB	lab(37.92, 27.02, -55.35)
CIE-LCH	lch(37.92, 61.59, 296.02°)
OKLab	oklab(47.54% 0.0089 -0.159)
OKLCH	oklch(47.54% 0.159 273.2)
XYZ	xyz(13.2782, 10.0444, 44.4102)
Luminance	0.1005 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424FB4 #B4A742

analogous

#4288B4 #424FB4 #6E42B4

triadic

#424FB4 #B4424F #4FB442

tetradic

#424FB4 #B44288 #B4A742 #42B46E

square

#424FB4 #B44288 #B4A742 #42B46E

split-complementary

#424FB4 #B46E42 #88B442

monochromatic

#21285A #323B87 #424FB4 #6B75C9 #979FD9

Accessibility & contrast

On white

6.98

#424FB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#424FB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424FB4

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424FB4	#FFFFFF	#000000	##FFFFFF
##424FB4	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424fb4;
/* rgb */ color: rgb(66, 79, 180);
/* oklch */ color: oklch(47.5% 0.159 273.2);

Tailwind

colors: {
  custom: {
    50: '#8280cb',
    500: '#424fb4',
    950: '#000000',
  },
}

SCSS

$custom: #424fb4;
$custom-light: #8280cb;
$custom-dark: #000000;

JSON

{
  "hex": "#424fb4",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 180
  },
  "hsl": {
    "h": 233.158,
    "s": 46.341,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47536,
    "c": 0.15928,
    "h": 273.2
  },
  "luminance": 0.10046
}

Semantic roles & 50–950 ramp

primary

#424FB4

secondary

#C5BE8D

accent

#C752D6

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #424FB4

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

Preview Lab → · Contrast checker → · Palette generator →