#3333B4#3333B4

#3333B4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.7% C 0.197 H 273.8°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#3333B4
RGB	rgb(51, 51, 180)
HSL	hsl(240, 56%, 45%)
HSV	hsv(240, 72%, 71%)
CMYK	cmyk(71.7%, 71.7%, 0%, 29.4%)
CIE-LAB	lab(30.32, 42.42, -67.82)
CIE-LCH	lch(30.32, 79.99, 302.03°)
OKLab	oklab(41.72% 0.0131 -0.1961)
OKLCH	oklch(41.72% 0.197 273.8)
XYZ	xyz(10.7845, 6.3657, 43.8315)
Luminance	0.0637 (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

#3333B4 #B4B433

analogous

#3373B4 #3333B4 #7333B4

triadic

#3333B4 #B43333 #33B433

tetradic

#3333B4 #B43373 #B4B433 #33B473

square

#3333B4 #B43373 #B4B433 #33B473

split-complementary

#3333B4 #B47333 #73B433

monochromatic

#181855 #252584 #3333B4 #5555CF #8585DC

Accessibility & contrast

On white

9.24

#3333B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#3333B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B4

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B4	#FFFFFF	#000000	##FFFFFF
##3333B4	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#0041B2

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3333b4;
/* rgb */ color: rgb(51, 51, 180);
/* oklch */ color: oklch(41.7% 0.197 273.8);

Tailwind

colors: {
  custom: {
    50: '#7e6ccc',
    500: '#3333b4',
    950: '#000000',
  },
}

SCSS

$custom: #3333b4;
$custom-light: #7e6ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b4",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 180
  },
  "hsl": {
    "h": 240,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.41716,
    "c": 0.19656,
    "h": 273.8
  },
  "luminance": 0.06367
}

Semantic roles & 50–950 ramp

primary

#3333B4

secondary

#C6C67D

accent

#DF49DF

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333B4

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

Preview Lab → · Contrast checker → · Palette generator →