#333FB8#333FB8

#333FB8 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.1% C 0.188 H 271.6°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#333FB8
RGB	rgb(51, 63, 184)
HSL	hsl(235, 57%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(72.3%, 65.8%, 0%, 27.8%)
CIE-LAB	lab(33.39, 36.49, -65.14)
CIE-LCH	lch(33.39, 74.66, 299.25°)
OKLab	oklab(44.05% 0.0054 -0.1883)
OKLCH	oklch(44.05% 0.188 271.6)
XYZ	xyz(11.7915, 7.7183, 46.2065)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FB8 #B8AC33

analogous

#3381B8 #333FB8 #6933B8

triadic

#333FB8 #B8333F #3FB833

tetradic

#333FB8 #B83381 #B8AC33 #33B869

square

#333FB8 #B83381 #B8AC33 #33B869

split-complementary

#333FB8 #B86933 #81B833

monochromatic

#181E58 #262F88 #333FB8 #5863D1 #888FDE

Accessibility & contrast

On white

8.25

#333FB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#333FB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FB8

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FB8	#FFFFFF	#000000	##FFFFFF
##333FB8	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BC

Deuteranopia (green-blind)

#0048B6

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #333fb8;
/* rgb */ color: rgb(51, 63, 184);
/* oklch */ color: oklch(44.1% 0.188 271.6);

Tailwind

colors: {
  custom: {
    50: '#7e74ce',
    500: '#333fb8',
    950: '#000000',
  },
}

SCSS

$custom: #333fb8;
$custom-light: #7e74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#333fb8",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 184
  },
  "hsl": {
    "h": 234.586,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.44051,
    "c": 0.18836,
    "h": 271.6
  },
  "luminance": 0.0772
}

Semantic roles & 50–950 ramp

primary

#333FB8

secondary

#C8C17F

accent

#D248E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333FB8

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

Preview Lab → · Contrast checker → · Palette generator →