#333DB4#333DB4

#333DB4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.3% C 0.185 H 272.2°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#333DB4
RGB	rgb(51, 61, 180)
HSL	hsl(235, 56%, 45%)
HSV	hsv(235, 72%, 71%)
CMYK	cmyk(71.7%, 66.1%, 0%, 29.4%)
CIE-LAB	lab(32.56, 36.33, -64.13)
CIE-LCH	lch(32.56, 73.71, 299.53°)
OKLab	oklab(43.34% 0.007 -0.1853)
OKLCH	oklch(43.34% 0.185 272.2)
XYZ	xyz(11.2694, 7.3355, 43.9931)
Luminance	0.0734 (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

#333DB4 #B4AA33

analogous

#337DB4 #333DB4 #6A33B4

triadic

#333DB4 #B4333D #3DB433

tetradic

#333DB4 #B4337D #B4AA33 #33B46A

square

#333DB4 #B4337D #B4AA33 #33B46A

split-complementary

#333DB4 #B46A33 #7DB433

monochromatic

#181D55 #252D84 #333DB4 #555FCF #858CDC

Accessibility & contrast

On white

8.51

#333DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#333DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DB4

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DB4	#FFFFFF	#000000	##FFFFFF
##333DB4	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333db4;
/* rgb */ color: rgb(51, 61, 180);
/* oklch */ color: oklch(43.3% 0.185 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d73cb',
    500: '#333db4',
    950: '#000000',
  },
}

SCSS

$custom: #333db4;
$custom-light: #7d73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#333db4",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 180
  },
  "hsl": {
    "h": 235.349,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43335,
    "c": 0.18547,
    "h": 272.2
  },
  "luminance": 0.07337
}

Semantic roles & 50–950 ramp

primary

#333DB4

secondary

#C6C07D

accent

#D349DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333DB4

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

Preview Lab → · Contrast checker → · Palette generator →