#333CB1#333CB1

#333CB1 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.183 H 272.5°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#333CB1
RGB	rgb(51, 60, 177)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 69%)
CMYK	cmyk(71.2%, 66.1%, 0%, 30.6%)
CIE-LAB	lab(32.05, 35.90, -63.18)
CIE-LCH	lch(32.05, 72.67, 299.61°)
OKLab	oklab(42.88% 0.0079 -0.1825)
OKLCH	oklch(42.88% 0.183 272.5)
XYZ	xyz(10.9142, 7.1088, 42.3834)
Luminance	0.0711 (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

#333CB1 #B1A833

analogous

#337BB1 #333CB1 #6933B1

triadic

#333CB1 #B1333C #3CB133

tetradic

#333CB1 #B1337B #B1A833 #33B169

square

#333CB1 #B1337B #B1A833 #33B169

split-complementary

#333CB1 #B16933 #7BB133

monochromatic

#181C52 #252C81 #333CB1 #545CCE #8389DB

Accessibility & contrast

On white

8.67

#333CB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#333CB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB1

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB1	#FFFFFF	#000000	##FFFFFF
##333CB1	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B5

Deuteranopia (green-blind)

#0046AF

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333cb1;
/* rgb */ color: rgb(51, 60, 177);
/* oklch */ color: oklch(42.9% 0.183 272.5);

Tailwind

colors: {
  custom: {
    50: '#7c72c9',
    500: '#333cb1',
    950: '#000000',
  },
}

SCSS

$custom: #333cb1;
$custom-light: #7c72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb1",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 177
  },
  "hsl": {
    "h": 235.714,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42884,
    "c": 0.18272,
    "h": 272.5
  },
  "luminance": 0.0711
}

Semantic roles & 50–950 ramp

primary

#333CB1

secondary

#C5BF7B

accent

#D449DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333CB1

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

Preview Lab → · Contrast checker → · Palette generator →