#3333B3#3333B3

#3333B3 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.6% C 0.195 H 273.9°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#3333B3
RGB	rgb(51, 51, 179)
HSL	hsl(240, 56%, 45%)
HSV	hsv(240, 72%, 70%)
CMYK	cmyk(71.5%, 71.5%, 0%, 29.8%)
CIE-LAB	lab(30.22, 42.08, -67.38)
CIE-LCH	lch(30.22, 79.45, 301.98°)
OKLab	oklab(41.62% 0.0133 -0.1949)
OKLCH	oklch(41.62% 0.195 273.9)
XYZ	xyz(10.6830, 6.3251, 43.2969)
Luminance	0.0633 (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

#3333B3 #B3B333

analogous

#3373B3 #3333B3 #7333B3

triadic

#3333B3 #B33333 #33B333

tetradic

#3333B3 #B33373 #B3B333 #33B373

square

#3333B3 #B33373 #B3B333 #33B373

split-complementary

#3333B3 #B37333 #73B333

monochromatic

#181854 #252583 #3333B3 #5555CE #8484DC

Accessibility & contrast

On white

9.27

#3333B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#3333B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B3

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B3	#FFFFFF	#000000	##FFFFFF
##3333B3	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB7

Deuteranopia (green-blind)

#0041B1

Tritanopia (blue-blind)

#00576F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3333b3;
/* rgb */ color: rgb(51, 51, 179);
/* oklch */ color: oklch(41.6% 0.195 273.9);

Tailwind

colors: {
  custom: {
    50: '#7e6ccb',
    500: '#3333b3',
    950: '#000000',
  },
}

SCSS

$custom: #3333b3;
$custom-light: #7e6ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b3",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 179
  },
  "hsl": {
    "h": 240,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.41615,
    "c": 0.19531,
    "h": 273.9
  },
  "luminance": 0.06326
}

Semantic roles & 50–950 ramp

primary

#3333B3

secondary

#C6C67C

accent

#DF49DF

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333B3

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

Preview Lab → · Contrast checker → · Palette generator →