#333EB0#333EB0

#333EB0 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.179 H 272.1°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#333EB0
RGB	rgb(51, 62, 176)
HSL	hsl(235, 55%, 45%)
HSV	hsv(235, 71%, 69%)
CMYK	cmyk(71%, 64.8%, 0%, 31%)
CIE-LAB	lab(32.44, 34.28, -61.95)
CIE-LCH	lch(32.44, 70.80, 298.96°)
OKLab	oklab(43.14% 0.0066 -0.1789)
OKLCH	oklch(43.14% 0.179 272.1)
XYZ	xyz(10.9217, 7.2826, 41.8960)
Luminance	0.0728 (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

#333EB0 #B0A533

analogous

#337DB0 #333EB0 #6733B0

triadic

#333EB0 #B0333E #3EB033

tetradic

#333EB0 #B0337D #B0A533 #33B067

square

#333EB0 #B0337D #B0A533 #33B067

split-complementary

#333EB0 #B06733 #7DB033

monochromatic

#181D51 #252D81 #333EB0 #535ECD #828ADB

Accessibility & contrast

On white

8.55

#333EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#333EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333EB0

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333EB0	#FFFFFF	#000000	##FFFFFF
##333EB0	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)

#0052B4

Deuteranopia (green-blind)

#0047AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333eb0;
/* rgb */ color: rgb(51, 62, 176);
/* oklch */ color: oklch(43.1% 0.179 272.1);

Tailwind

colors: {
  custom: {
    50: '#7c73c9',
    500: '#333eb0',
    950: '#000000',
  },
}

SCSS

$custom: #333eb0;
$custom-light: #7c73c9;
$custom-dark: #000000;

JSON

{
  "hex": "#333eb0",
  "rgb": {
    "r": 51,
    "g": 62,
    "b": 176
  },
  "hsl": {
    "h": 234.72,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43141,
    "c": 0.17906,
    "h": 272.1
  },
  "luminance": 0.07284
}

Semantic roles & 50–950 ramp

primary

#333EB0

secondary

#C4BE7B

accent

#D149DE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333EB0

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

Preview Lab → · Contrast checker → · Palette generator →