#424EB3#424EB3

#424EB3 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.3% C 0.159 H 273.5°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#424EB3
RGB	rgb(66, 78, 179)
HSL	hsl(234, 46%, 48%)
HSV	hsv(234, 63%, 70%)
CMYK	cmyk(63.1%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(37.59, 27.31, -55.30)
CIE-LCH	lch(37.59, 61.68, 296.28°)
OKLab	oklab(47.27% 0.0098 -0.1589)
OKLCH	oklch(47.27% 0.159 273.5)
XYZ	xyz(13.1051, 9.8606, 43.8518)
Luminance	0.0986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424EB3 #B3A742

analogous

#4286B3 #424EB3 #6E42B3

triadic

#424EB3 #B3424E #4EB342

tetradic

#424EB3 #B34286 #B3A742 #42B36E

square

#424EB3 #B34286 #B3A742 #42B36E

split-complementary

#424EB3 #B36E42 #86B342

monochromatic

#21275A #323B86 #424EB3 #6A74C8 #979ED9

Accessibility & contrast

On white

7.06

#424EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#424EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424EB3

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424EB3	#FFFFFF	#000000	##FFFFFF
##424EB3	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB6

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #424eb3;
/* rgb */ color: rgb(66, 78, 179);
/* oklch */ color: oklch(47.3% 0.159 273.5);

Tailwind

colors: {
  custom: {
    50: '#827fca',
    500: '#424eb3',
    950: '#000000',
  },
}

SCSS

$custom: #424eb3;
$custom-light: #827fca;
$custom-dark: #000000;

JSON

{
  "hex": "#424eb3",
  "rgb": {
    "r": 66,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 233.628,
    "s": 46.122,
    "l": 48.039
  },
  "oklch": {
    "l": 0.47266,
    "c": 0.15919,
    "h": 273.5
  },
  "luminance": 0.09862
}

Semantic roles & 50–950 ramp

primary

#424EB3

secondary

#C4BE8C

accent

#C852D6

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #424EB3

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

Preview Lab → · Contrast checker → · Palette generator →