#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
RGBrgb(51, 63, 173)
HSLhsl(234, 54%, 44%)
HSVhsv(234, 71%, 68%)
CMYKcmyk(70.5%, 63.6%, 0%, 32.2%)
CIE-LABlab(32.42, 32.57, -60.19)
CIE-LCHlch(32.42, 68.44, 298.42°)
OKLaboklab(43.05% 0.006 -0.1738)
OKLCHoklch(43.05% 0.174 272)
XYZxyz(10.6830, 7.2749, 40.3683)
Luminance0.0728 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

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
##333FAD1.008.552.468.55
#FFFFFF8.551.0021.001.00
#0000002.4621.001.0021.00
##FFFFFF8.551.0021.001.00

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 →

#333FAD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva