#3333B1#3333B1

#3333B1 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.4% C 0.193 H 274.0°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#3333B1
RGB	rgb(51, 51, 177)
HSL	hsl(240, 55%, 45%)
HSV	hsv(240, 71%, 69%)
CMYK	cmyk(71.2%, 71.2%, 0%, 30.6%)
CIE-LAB	lab(30.02, 41.41, -66.52)
CIE-LCH	lch(30.02, 78.35, 301.90°)
OKLab	oklab(41.42% 0.0136 -0.1923)
OKLCH	oklch(41.42% 0.193 274)
XYZ	xyz(10.4822, 6.2448, 42.2394)
Luminance	0.0625 (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

#3333B1 #B1B133

analogous

#3372B1 #3333B1 #7233B1

triadic

#3333B1 #B13333 #33B133

tetradic

#3333B1 #B13372 #B1B133 #33B172

square

#3333B1 #B13372 #B1B133 #33B172

split-complementary

#3333B1 #B17233 #72B133

monochromatic

#181852 #252581 #3333B1 #5454CE #8383DB

Accessibility & contrast

On white

9.34

#3333B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3333B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B1

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B1	#FFFFFF	#000000	##FFFFFF
##3333B1	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB5

Deuteranopia (green-blind)

#0041AF

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3333b1;
/* rgb */ color: rgb(51, 51, 177);
/* oklch */ color: oklch(41.4% 0.193 274.0);

Tailwind

colors: {
  custom: {
    50: '#7d6cc9',
    500: '#3333b1',
    950: '#000000',
  },
}

SCSS

$custom: #3333b1;
$custom-light: #7d6cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b1",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 177
  },
  "hsl": {
    "h": 240,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41415,
    "c": 0.1928,
    "h": 274
  },
  "luminance": 0.06246
}

Semantic roles & 50–950 ramp

primary

#3333B1

secondary

#C5C57B

accent

#DF49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333B1

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

Preview Lab → · Contrast checker → · Palette generator →