#424CB5#424CB5

#424CB5 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.165 H 274.1°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#424CB5
RGB	rgb(66, 76, 181)
HSL	hsl(235, 47%, 48%)
HSV	hsv(235, 64%, 71%)
CMYK	cmyk(63.5%, 58%, 0%, 29%)
CIE-LAB	lab(37.23, 29.29, -57.07)
CIE-LCH	lch(37.23, 64.14, 297.17°)
OKLab	oklab(47.04% 0.0117 -0.1641)
OKLCH	oklch(47.04% 0.165 274.1)
XYZ	xyz(13.1689, 9.6622, 44.8781)
Luminance	0.0966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424CB5 #B5AB42

analogous

#4285B5 #424CB5 #7142B5

triadic

#424CB5 #B5424C #4CB542

tetradic

#424CB5 #B54285 #B5AB42 #42B571

square

#424CB5 #B54285 #B5AB42 #42B571

split-complementary

#424CB5 #B57142 #85B542

monochromatic

#21265B #323988 #424CB5 #6B73C9 #989ED9

Accessibility & contrast

On white

7.16

#424CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#424CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424CB5

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424CB5	#FFFFFF	#000000	##FFFFFF
##424CB5	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB9

Deuteranopia (green-blind)

#0053B3

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #424cb5;
/* rgb */ color: rgb(66, 76, 181);
/* oklch */ color: oklch(47.0% 0.165 274.1);

Tailwind

colors: {
  custom: {
    50: '#837ecc',
    500: '#424cb5',
    950: '#000000',
  },
}

SCSS

$custom: #424cb5;
$custom-light: #837ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#424cb5",
  "rgb": {
    "r": 66,
    "g": 76,
    "b": 181
  },
  "hsl": {
    "h": 234.783,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47043,
    "c": 0.16453,
    "h": 274.1
  },
  "luminance": 0.09663
}

Semantic roles & 50–950 ramp

primary

#424CB5

secondary

#C5C08E

accent

#CB52D6

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0913

muted

#7D7B82

Preview Lab

Preview with #424CB5

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

Preview Lab → · Contrast checker → · Palette generator →