#333FAC#333FAC

#333FAC is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.173 H 272.0°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#333FAC
RGB	rgb(51, 63, 172)
HSL	hsl(234, 54%, 44%)
HSV	hsv(234, 70%, 67%)
CMYK	cmyk(70.3%, 63.4%, 0%, 32.5%)
CIE-LAB	lab(32.34, 32.21, -59.73)
CIE-LCH	lch(32.34, 67.86, 298.34°)
OKLab	oklab(42.96% 0.0061 -0.1724)
OKLCH	oklch(42.96% 0.173 272)
XYZ	xyz(10.5866, 7.2364, 39.8606)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.13

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FAC #ACA033

analogous

#337BAC #333FAC #6333AC

triadic

#333FAC #AC333F #3FAC33

tetradic

#333FAC #AC337B #ACA033 #33AC63

square

#333FAC #AC337B #ACA033 #33AC63

split-complementary

#333FAC #AC6333 #7BAC33

monochromatic

#171C4E #252E7D #333FAC #515DCB #8089D9

Accessibility & contrast

On white

8.58

#333FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#333FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FAC

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FAC	#FFFFFF	#000000	##FFFFFF
##333FAC	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B0

Deuteranopia (green-blind)

#0047AA

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333fac;
/* rgb */ color: rgb(51, 63, 172);
/* oklch */ color: oklch(43.0% 0.173 272.0);

Tailwind

colors: {
  custom: {
    50: '#7b74c6',
    500: '#333fac',
    950: '#000000',
  },
}

SCSS

$custom: #333fac;
$custom-light: #7b74c6;
$custom-dark: #000000;

JSON

{
  "hex": "#333fac",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 172
  },
  "hsl": {
    "h": 234.05,
    "s": 54.26,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42958,
    "c": 0.17254,
    "h": 272
  },
  "luminance": 0.07237
}

Semantic roles & 50–950 ramp

primary

#333FAC

secondary

#C2BB78

accent

#CF4ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333FAC

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

Preview Lab → · Contrast checker → · Palette generator →