#333FA8#333FA8

#333FA8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.6% C 0.167 H 272.1°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#333FA8
RGB	rgb(51, 63, 168)
HSL	hsl(234, 53%, 43%)
HSV	hsv(234, 70%, 66%)
CMYK	cmyk(69.6%, 62.5%, 0%, 34.1%)
CIE-LAB	lab(32.00, 30.78, -57.89)
CIE-LCH	lch(32.00, 65.56, 298.00°)
OKLab	oklab(42.6% 0.0063 -0.167)
OKLCH	oklch(42.6% 0.167 272.1)
XYZ	xyz(10.2083, 7.0850, 37.8678)
Luminance	0.0709 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FA8 #A89C33

analogous

#3379A8 #333FA8 #6133A8

triadic

#333FA8 #A8333F #3FA833

tetradic

#333FA8 #A83379 #A89C33 #33A861

square

#333FA8 #A83379 #A89C33 #33A861

split-complementary

#333FA8 #A86133 #79A833

monochromatic

#161C4A #252D79 #333FA8 #4F5BC9 #7E87D8

Accessibility & contrast

On white

8.69

#333FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#333FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FA8

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FA8	#FFFFFF	#000000	##FFFFFF
##333FA8	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AB

Deuteranopia (green-blind)

#0046A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333fa8;
/* rgb */ color: rgb(51, 63, 168);
/* oklch */ color: oklch(42.6% 0.167 272.1);

Tailwind

colors: {
  custom: {
    50: '#7a74c3',
    500: '#333fa8',
    950: '#000000',
  },
}

SCSS

$custom: #333fa8;
$custom-light: #7a74c3;
$custom-dark: #000000;

JSON

{
  "hex": "#333fa8",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 168
  },
  "hsl": {
    "h": 233.846,
    "s": 53.425,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42603,
    "c": 0.16715,
    "h": 272.1
  },
  "luminance": 0.07086
}

Semantic roles & 50–950 ramp

primary

#333FA8

secondary

#C1B976

accent

#CE4BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #333FA8

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

Preview Lab → · Contrast checker → · Palette generator →