#333AB0#333AB0

#333AB0 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.184 H 272.9°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#333AB0
RGB	rgb(51, 58, 176)
HSL	hsl(237, 55%, 45%)
HSV	hsv(237, 71%, 69%)
CMYK	cmyk(71%, 67%, 0%, 31%)
CIE-LAB	lab(31.49, 36.80, -63.50)
CIE-LCH	lch(31.49, 73.39, 300.09°)
OKLab	oklab(42.45% 0.0093 -0.1835)
OKLCH	oklch(42.45% 0.184 272.9)
XYZ	xyz(10.7121, 6.8635, 41.8261)
Luminance	0.0687 (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

#333AB0 #B0A933

analogous

#3379B0 #333AB0 #6B33B0

triadic

#333AB0 #B0333A #3AB033

tetradic

#333AB0 #B03379 #B0A933 #33B06B

square

#333AB0 #B03379 #B0A933 #33B06B

split-complementary

#333AB0 #B06B33 #79B033

monochromatic

#181B51 #252A81 #333AB0 #535ACD #8287DB

Accessibility & contrast

On white

8.85

#333AB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#333AB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333AB0

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333AB0	#FFFFFF	#000000	##FFFFFF
##333AB0	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0044AE

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #333ab0;
/* rgb */ color: rgb(51, 58, 176);
/* oklch */ color: oklch(42.4% 0.184 272.9);

Tailwind

colors: {
  custom: {
    50: '#7c70c9',
    500: '#333ab0',
    950: '#000000',
  },
}

SCSS

$custom: #333ab0;
$custom-light: #7c70c9;
$custom-dark: #000000;

JSON

{
  "hex": "#333ab0",
  "rgb": {
    "r": 51,
    "g": 58,
    "b": 176
  },
  "hsl": {
    "h": 236.64,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42449,
    "c": 0.18374,
    "h": 272.9
  },
  "luminance": 0.06865
}

Semantic roles & 50–950 ramp

primary

#333AB0

secondary

#C4C07B

accent

#D649DE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #333AB0

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

Preview Lab → · Contrast checker → · Palette generator →