#424EB7#424EB7

#424EB7 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.6% C 0.165 H 273.5°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#424EB7
RGB	rgb(66, 78, 183)
HSL	hsl(234, 47%, 49%)
HSV	hsv(234, 64%, 72%)
CMYK	cmyk(63.9%, 57.4%, 0%, 28.2%)
CIE-LAB	lab(37.89, 28.71, -57.18)
CIE-LCH	lch(37.89, 63.98, 296.66°)
OKLab	oklab(47.58% 0.0099 -0.1644)
OKLCH	oklch(47.58% 0.165 273.5)
XYZ	xyz(13.5156, 10.0248, 46.0133)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424EB7 #B7AB42

analogous

#4289B7 #424EB7 #7142B7

triadic

#424EB7 #B7424E #4EB742

tetradic

#424EB7 #B74289 #B7AB42 #42B771

square

#424EB7 #B74289 #B7AB42 #42B771

split-complementary

#424EB7 #B77142 #89B742

monochromatic

#22285D #323B8A #424EB7 #6C76CA #99A0DA

Accessibility & contrast

On white

6.99

#424EB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#424EB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424EB7

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424EB7	#FFFFFF	#000000	##FFFFFF
##424EB7	1.00	6.99	3.01	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBB

Deuteranopia (green-blind)

#0054B5

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424eb7;
/* rgb */ color: rgb(66, 78, 183);
/* oklch */ color: oklch(47.6% 0.165 273.5);

Tailwind

colors: {
  custom: {
    50: '#837fcd',
    500: '#424eb7',
    950: '#000000',
  },
}

SCSS

$custom: #424eb7;
$custom-light: #837fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#424eb7",
  "rgb": {
    "r": 66,
    "g": 78,
    "b": 183
  },
  "hsl": {
    "h": 233.846,
    "s": 46.988,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4758,
    "c": 0.16471,
    "h": 273.5
  },
  "luminance": 0.10026
}

Semantic roles & 50–950 ramp

primary

#424EB7

secondary

#C6C18F

accent

#C951D7

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #424EB7

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

Preview Lab → · Contrast checker → · Palette generator →