#424FB5#424FB5

#424FB5 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.6% C 0.161 H 273.2°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#424FB5
RGB	rgb(66, 79, 181)
HSL	hsl(233, 47%, 48%)
HSV	hsv(233, 64%, 71%)
CMYK	cmyk(63.5%, 56.4%, 0%, 29%)
CIE-LAB	lab(38.00, 27.37, -55.82)
CIE-LCH	lch(38.00, 62.17, 296.12°)
OKLab	oklab(47.61% 0.009 -0.1604)
OKLCH	oklch(47.61% 0.161 273.2)
XYZ	xyz(13.3805, 10.0853, 44.9486)
Luminance	0.1009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424FB5 #B5A842

analogous

#4288B5 #424FB5 #6E42B5

triadic

#424FB5 #B5424F #4FB542

tetradic

#424FB5 #B54288 #B5A842 #42B56E

square

#424FB5 #B54288 #B5A842 #42B56E

split-complementary

#424FB5 #B56E42 #88B542

monochromatic

#21285B #323B88 #424FB5 #6B76C9 #989FD9

Accessibility & contrast

On white

6.96

#424FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#424FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424FB5

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424FB5	#FFFFFF	#000000	##FFFFFF
##424FB5	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FB8

Deuteranopia (green-blind)

#0055B3

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424fb5;
/* rgb */ color: rgb(66, 79, 181);
/* oklch */ color: oklch(47.6% 0.161 273.2);

Tailwind

colors: {
  custom: {
    50: '#8280cc',
    500: '#424fb5',
    950: '#000000',
  },
}

SCSS

$custom: #424fb5;
$custom-light: #8280cc;
$custom-dark: #000000;

JSON

{
  "hex": "#424fb5",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 181
  },
  "hsl": {
    "h": 233.217,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47614,
    "c": 0.16067,
    "h": 273.2
  },
  "luminance": 0.10086
}

Semantic roles & 50–950 ramp

primary

#424FB5

secondary

#C5BF8E

accent

#C752D6

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #424FB5

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

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