#424B78#424B78

#424B78 is a dark, moderate blue. Relative luminance 0.075; OKLCH L 42.6% C 0.076 H 274.2°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#424B78
RGB	rgb(66, 75, 120)
HSL	hsl(230, 29%, 36%)
HSV	hsv(230, 45%, 47%)
CMYK	cmyk(45%, 37.5%, 0%, 52.9%)
CIE-LAB	lab(33.02, 9.21, -26.84)
CIE-LCH	lch(33.02, 28.38, 288.94°)
OKLab	oklab(42.6% 0.0055 -0.0754)
OKLCH	oklch(42.6% 0.076 274.2)
XYZ	xyz(8.1520, 7.5461, 18.7927)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424B78 #786F42

analogous

#426678 #424B78 #544278

triadic

#424B78 #78424B #4B7842

tetradic

#424B78 #784266 #786F42 #427854

square

#424B78 #784266 #786F42 #427854

split-complementary

#424B78 #785442 #667842

monochromatic

#171A29 #2C3251 #424B78 #58649F #7D87B7

Accessibility & contrast

On white

8.37

#424B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#424B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424B78

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424B78	#FFFFFF	#000000	##FFFFFF
##424B78	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B507A

Deuteranopia (green-blind)

#374C77

Tritanopia (blue-blind)

#30545C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #424b78;
/* rgb */ color: rgb(66, 75, 120);
/* oklch */ color: oklch(42.6% 0.076 274.2);

Tailwind

colors: {
  custom: {
    50: '#797d9f',
    500: '#424b78',
    950: '#000000',
  },
}

SCSS

$custom: #424b78;
$custom-light: #797d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#424b78",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 120
  },
  "hsl": {
    "h": 230,
    "s": 29.032,
    "l": 36.471
  },
  "oklch": {
    "l": 0.42595,
    "c": 0.07563,
    "h": 274.2
  },
  "luminance": 0.07546
}

Semantic roles & 50–950 ramp

primary

#424B78

secondary

#A29B73

accent

#B562C5

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#09090E

muted

#7B7B7E

Preview Lab

Preview with #424B78

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

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