#424EA3#424EA3

#424EA3 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.1% C 0.137 H 273.7°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#424EA3
RGB	rgb(66, 78, 163)
HSL	hsl(233, 42%, 45%)
HSV	hsv(233, 60%, 64%)
CMYK	cmyk(59.5%, 52.1%, 0%, 36.1%)
CIE-LAB	lab(36.46, 21.74, -47.61)
CIE-LCH	lch(36.46, 52.34, 294.54°)
OKLab	oklab(46.06% 0.0089 -0.1363)
OKLCH	oklch(46.06% 0.137 273.7)
XYZ	xyz(11.5799, 9.2505, 35.8185)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424EA3 #A39742

analogous

#427FA3 #424EA3 #6642A3

triadic

#424EA3 #A3424E #4EA342

tetradic

#424EA3 #A3427F #A39742 #42A366

square

#424EA3 #A3427F #A39742 #42A366

split-complementary

#424EA3 #A36642 #7FA342

monochromatic

#1F244C #303977 #424EA3 #636EC0 #8E96D1

Accessibility & contrast

On white

7.37

#424EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#424EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424EA3

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424EA3	#FFFFFF	#000000	##FFFFFF
##424EA3	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5AA6

Deuteranopia (green-blind)

#0752A1

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #424ea3;
/* rgb */ color: rgb(66, 78, 163);
/* oklch */ color: oklch(46.1% 0.137 273.7);

Tailwind

colors: {
  custom: {
    50: '#7f7fbf',
    500: '#424ea3',
    950: '#000000',
  },
}

SCSS

$custom: #424ea3;
$custom-light: #7f7fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#424ea3",
  "rgb": {
    "r": 66,
    "g": 78,
    "b": 163
  },
  "hsl": {
    "h": 232.577,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4606,
    "c": 0.13656,
    "h": 273.7
  },
  "luminance": 0.09251
}

Semantic roles & 50–950 ramp

primary

#424EA3

secondary

#BCB684

accent

#C356D2

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #424EA3

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

Preview Lab → · Contrast checker → · Palette generator →