#333FAD#333FAD

#333FAD is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.174 H 272.0°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#333FAD
RGB	rgb(51, 63, 173)
HSL	hsl(234, 54%, 44%)
HSV	hsv(234, 71%, 68%)
CMYK	cmyk(70.5%, 63.6%, 0%, 32.2%)
CIE-LAB	lab(32.42, 32.57, -60.19)
CIE-LCH	lch(32.42, 68.44, 298.42°)
OKLab	oklab(43.05% 0.006 -0.1738)
OKLCH	oklch(43.05% 0.174 272)
XYZ	xyz(10.6830, 7.2749, 40.3683)
Luminance	0.0728 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.02

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FAD #ADA133

analogous

#337CAD #333FAD #6433AD

triadic

#333FAD #AD333F #3FAD33

tetradic

#333FAD #AD337C #ADA133 #33AD64

square

#333FAD #AD337C #ADA133 #33AD64

split-complementary

#333FAD #AD6433 #7CAD33

monochromatic

#171D4E #252E7E #333FAD #515DCC #8189DA

Accessibility & contrast

On white

8.55

#333FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#333FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FAD

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FAD	#FFFFFF	#000000	##FFFFFF
##333FAD	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B1

Deuteranopia (green-blind)

#0047AB

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333fad;
/* rgb */ color: rgb(51, 63, 173);
/* oklch */ color: oklch(43.0% 0.174 272.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#333fad",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 173
  },
  "hsl": {
    "h": 234.098,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43048,
    "c": 0.17387,
    "h": 272
  },
  "luminance": 0.07276
}

Semantic roles & 50–950 ramp

primary

#333FAD

secondary

#C3BC79

accent

#CF4ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333FAD

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

Preview Lab → · Contrast checker → · Palette generator →