#3333B9#3333B9

#3333B9 is a dark, highly saturated blue. Relative luminance 0.066; OKLCH L 42.2% C 0.203 H 273.5°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#3333B9
RGB	rgb(51, 51, 185)
HSL	hsl(240, 57%, 46%)
HSV	hsv(240, 72%, 73%)
CMYK	cmyk(72.4%, 72.4%, 0%, 27.5%)
CIE-LAB	lab(30.81, 44.09, -69.97)
CIE-LCH	lch(30.81, 82.70, 302.22°)
OKLab	oklab(42.22% 0.0123 -0.2024)
OKLCH	oklch(42.22% 0.203 273.5)
XYZ	xyz(11.3031, 6.5731, 46.5626)
Luminance	0.0657 (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

#3333B9 #B9B933

analogous

#3376B9 #3333B9 #7633B9

triadic

#3333B9 #B93333 #33B933

tetradic

#3333B9 #B93376 #B9B933 #33B976

square

#3333B9 #B93376 #B9B933 #33B976

split-complementary

#3333B9 #B97633 #76B933

monochromatic

#191959 #262689 #3333B9 #5858D1 #8888DE

Accessibility & contrast

On white

9.07

#3333B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3333B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B9

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B9	#FFFFFF	#000000	##FFFFFF
##3333B9	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBD

Deuteranopia (green-blind)

#0042B7

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3333b9;
/* rgb */ color: rgb(51, 51, 185);
/* oklch */ color: oklch(42.2% 0.203 273.5);

Tailwind

colors: {
  custom: {
    50: '#7f6ccf',
    500: '#3333b9',
    950: '#000000',
  },
}

SCSS

$custom: #3333b9;
$custom-light: #7f6ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b9",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 185
  },
  "hsl": {
    "h": 240,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42221,
    "c": 0.20275,
    "h": 273.5
  },
  "luminance": 0.06574
}

Semantic roles & 50–950 ramp

primary

#3333B9

secondary

#C8C880

accent

#E048E0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3333B9

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

Preview Lab → · Contrast checker → · Palette generator →