#333CB2#333CB2

#333CB2 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.184 H 272.4°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#333CB2
RGB	rgb(51, 60, 178)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 70%)
CMYK	cmyk(71.3%, 66.3%, 0%, 30.2%)
CIE-LAB	lab(32.14, 36.25, -63.63)
CIE-LCH	lch(32.14, 73.23, 299.67°)
OKLab	oklab(42.98% 0.0078 -0.1839)
OKLCH	oklch(42.98% 0.184 272.4)
XYZ	xyz(11.0143, 7.1488, 42.9102)
Luminance	0.0715 (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

#333CB2 #B2A933

analogous

#337CB2 #333CB2 #6933B2

triadic

#333CB2 #B2333C #3CB233

tetradic

#333CB2 #B2337C #B2A933 #33B269

square

#333CB2 #B2337C #B2A933 #33B269

split-complementary

#333CB2 #B26933 #7CB233

monochromatic

#181C53 #252C82 #333CB2 #545DCE #848ADC

Accessibility & contrast

On white

8.64

#333CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#333CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB2

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB2	#FFFFFF	#000000	##FFFFFF
##333CB2	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0046B0

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333cb2;
/* rgb */ color: rgb(51, 60, 178);
/* oklch */ color: oklch(43.0% 0.184 272.4);

Tailwind

colors: {
  custom: {
    50: '#7d72ca',
    500: '#333cb2',
    950: '#000000',
  },
}

SCSS

$custom: #333cb2;
$custom-light: #7d72ca;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb2",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 178
  },
  "hsl": {
    "h": 235.748,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.42977,
    "c": 0.18403,
    "h": 272.4
  },
  "luminance": 0.0715
}

Semantic roles & 50–950 ramp

primary

#333CB2

secondary

#C5C07C

accent

#D449DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333CB2

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

Preview Lab → · Contrast checker → · Palette generator →