#333AB4#333AB4

#333AB4 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.189 H 272.7°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#333AB4
RGB	rgb(51, 58, 180)
HSL	hsl(237, 56%, 45%)
HSV	hsv(237, 72%, 71%)
CMYK	cmyk(71.7%, 67.8%, 0%, 29.4%)
CIE-LAB	lab(31.86, 38.20, -65.28)
CIE-LCH	lch(31.86, 75.63, 300.33°)
OKLab	oklab(42.83% 0.0089 -0.1887)
OKLCH	oklch(42.83% 0.189 272.7)
XYZ	xyz(11.1137, 7.0241, 43.9412)
Luminance	0.0703 (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

#333AB4 #B4AD33

analogous

#337BB4 #333AB4 #6C33B4

triadic

#333AB4 #B4333A #3AB433

tetradic

#333AB4 #B4337B #B4AD33 #33B46C

square

#333AB4 #B4337B #B4AD33 #33B46C

split-complementary

#333AB4 #B46C33 #7BB433

monochromatic

#181B55 #252B84 #333AB4 #555CCF #858ADC

Accessibility & contrast

On white

8.73

#333AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#333AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333AB4

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333AB4	#FFFFFF	#000000	##FFFFFF
##333AB4	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B8

Deuteranopia (green-blind)

#0045B2

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333ab4;
/* rgb */ color: rgb(51, 58, 180);
/* oklch */ color: oklch(42.8% 0.189 272.7);

Tailwind

colors: {
  custom: {
    50: '#7d70cc',
    500: '#333ab4',
    950: '#000000',
  },
}

SCSS

$custom: #333ab4;
$custom-light: #7d70cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333ab4",
  "rgb": {
    "r": 51,
    "g": 58,
    "b": 180
  },
  "hsl": {
    "h": 236.744,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42829,
    "c": 0.18891,
    "h": 272.7
  },
  "luminance": 0.07025
}

Semantic roles & 50–950 ramp

primary

#333AB4

secondary

#C6C27D

accent

#D749DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #333AB4

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

Preview Lab → · Contrast checker → · Palette generator →