#424EB8#424EB8

#424EB8 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.7% C 0.166 H 273.4°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#424EB8
RGB	rgb(66, 78, 184)
HSL	hsl(234, 47%, 49%)
HSV	hsv(234, 64%, 72%)
CMYK	cmyk(64.1%, 57.6%, 0%, 27.8%)
CIE-LAB	lab(37.96, 29.05, -57.64)
CIE-LCH	lch(37.96, 64.55, 296.75°)
OKLab	oklab(47.66% 0.01 -0.1658)
OKLCH	oklch(47.66% 0.166 273.4)
XYZ	xyz(13.6200, 10.0666, 46.5634)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424EB8 #B8AC42

analogous

#4289B8 #424EB8 #7142B8

triadic

#424EB8 #B8424E #4EB842

tetradic

#424EB8 #B84289 #B8AC42 #42B871

square

#424EB8 #B84289 #B8AC42 #42B871

split-complementary

#424EB8 #B87142 #89B842

monochromatic

#22285E #323B8B #424EB8 #6D76CB #9AA0DB

Accessibility & contrast

On white

6.97

#424EB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#424EB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424EB8

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424EB8	#FFFFFF	#000000	##FFFFFF
##424EB8	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBC

Deuteranopia (green-blind)

#0054B6

Tritanopia (blue-blind)

#00687B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424eb8;
/* rgb */ color: rgb(66, 78, 184);
/* oklch */ color: oklch(47.7% 0.166 273.4);

Tailwind

colors: {
  custom: {
    50: '#837fce',
    500: '#424eb8',
    950: '#000000',
  },
}

SCSS

$custom: #424eb8;
$custom-light: #837fce;
$custom-dark: #000000;

JSON

{
  "hex": "#424eb8",
  "rgb": {
    "r": 66,
    "g": 78,
    "b": 184
  },
  "hsl": {
    "h": 233.898,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.47659,
    "c": 0.16608,
    "h": 273.4
  },
  "luminance": 0.10068
}

Semantic roles & 50–950 ramp

primary

#424EB8

secondary

#C7C18F

accent

#C951D7

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #424EB8

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

Preview Lab → · Contrast checker → · Palette generator →