#333EB5#333EB5

#333EB5 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.186 H 271.9°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#333EB5
RGB	rgb(51, 62, 181)
HSL	hsl(235, 56%, 45%)
HSV	hsv(235, 72%, 71%)
CMYK	cmyk(71.8%, 65.7%, 0%, 29%)
CIE-LAB	lab(32.88, 36.06, -64.19)
CIE-LCH	lch(32.88, 73.63, 299.32°)
OKLab	oklab(43.6% 0.0062 -0.1855)
OKLCH	oklch(43.6% 0.186 271.9)
XYZ	xyz(11.4255, 7.4841, 44.5495)
Luminance	0.0748 (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

#333EB5 #B5AA33

analogous

#337FB5 #333EB5 #6933B5

triadic

#333EB5 #B5333E #3EB533

tetradic

#333EB5 #B5337F #B5AA33 #33B569

square

#333EB5 #B5337F #B5AA33 #33B569

split-complementary

#333EB5 #B56933 #7FB533

monochromatic

#181D56 #262E85 #333EB5 #5660CF #868DDD

Accessibility & contrast

On white

8.41

#333EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#333EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333EB5

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333EB5	#FFFFFF	#000000	##FFFFFF
##333EB5	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B9

Deuteranopia (green-blind)

#0047B3

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333eb5;
/* rgb */ color: rgb(51, 62, 181);
/* oklch */ color: oklch(43.6% 0.186 271.9);

Tailwind

colors: {
  custom: {
    50: '#7d73cc',
    500: '#333eb5',
    950: '#000000',
  },
}

SCSS

$custom: #333eb5;
$custom-light: #7d73cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333eb5",
  "rgb": {
    "r": 51,
    "g": 62,
    "b": 181
  },
  "hsl": {
    "h": 234.923,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43601,
    "c": 0.18561,
    "h": 271.9
  },
  "luminance": 0.07485
}

Semantic roles & 50–950 ramp

primary

#333EB5

secondary

#C6C07D

accent

#D348DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333EB5

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

Preview Lab → · Contrast checker → · Palette generator →