#333DB5#333DB5

#333DB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.187 H 272.1°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#333DB5
RGB	rgb(51, 61, 181)
HSL	hsl(235, 56%, 45%)
HSV	hsv(235, 72%, 71%)
CMYK	cmyk(71.8%, 66.3%, 0%, 29%)
CIE-LAB	lab(32.65, 36.68, -64.58)
CIE-LCH	lch(32.65, 74.27, 299.60°)
OKLab	oklab(43.43% 0.0069 -0.1866)
OKLCH	oklch(43.43% 0.187 272.1)
XYZ	xyz(11.3717, 7.3764, 44.5316)
Luminance	0.0738 (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

#333DB5 #B5AB33

analogous

#337EB5 #333DB5 #6A33B5

triadic

#333DB5 #B5333D #3DB533

tetradic

#333DB5 #B5337E #B5AB33 #33B56A

square

#333DB5 #B5337E #B5AB33 #33B56A

split-complementary

#333DB5 #B56A33 #7EB533

monochromatic

#181D56 #262D85 #333DB5 #565FCF #868CDD

Accessibility & contrast

On white

8.48

#333DB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#333DB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DB5

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DB5	#FFFFFF	#000000	##FFFFFF
##333DB5	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B9

Deuteranopia (green-blind)

#0047B3

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333db5;
/* rgb */ color: rgb(51, 61, 181);
/* oklch */ color: oklch(43.4% 0.187 272.1);

Tailwind

colors: {
  custom: {
    50: '#7d73cc',
    500: '#333db5',
    950: '#000000',
  },
}

SCSS

$custom: #333db5;
$custom-light: #7d73cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333db5",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 181
  },
  "hsl": {
    "h": 235.385,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43429,
    "c": 0.18678,
    "h": 272.1
  },
  "luminance": 0.07377
}

Semantic roles & 50–950 ramp

primary

#333DB5

secondary

#C6C17D

accent

#D448DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333DB5

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

Preview Lab → · Contrast checker → · Palette generator →