#3333B5#3333B5

#3333B5 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.198 H 273.8°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3333B5
RGB	rgb(51, 51, 181)
HSL	hsl(240, 56%, 45%)
HSV	hsv(240, 72%, 71%)
CMYK	cmyk(71.8%, 71.8%, 0%, 29%)
CIE-LAB	lab(30.42, 42.75, -68.25)
CIE-LCH	lch(30.42, 80.54, 302.06°)
OKLab	oklab(41.82% 0.0129 -0.1974)
OKLCH	oklch(41.82% 0.198 273.8)
XYZ	xyz(10.8868, 6.4066, 44.3700)
Luminance	0.0641 (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

#3333B5 #B5B533

analogous

#3374B5 #3333B5 #7433B5

triadic

#3333B5 #B53333 #33B533

tetradic

#3333B5 #B53374 #B5B533 #33B574

square

#3333B5 #B53374 #B5B533 #33B574

split-complementary

#3333B5 #B57433 #74B533

monochromatic

#181856 #262685 #3333B5 #5656CF #8686DD

Accessibility & contrast

On white

9.20

#3333B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3333B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B5

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B5	#FFFFFF	#000000	##FFFFFF
##3333B5	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB9

Deuteranopia (green-blind)

#0041B3

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3333b5;
/* rgb */ color: rgb(51, 51, 181);
/* oklch */ color: oklch(41.8% 0.198 273.8);

Tailwind

colors: {
  custom: {
    50: '#7e6ccc',
    500: '#3333b5',
    950: '#000000',
  },
}

SCSS

$custom: #3333b5;
$custom-light: #7e6ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b5",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 181
  },
  "hsl": {
    "h": 240,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.41816,
    "c": 0.1978,
    "h": 273.8
  },
  "luminance": 0.06408
}

Semantic roles & 50–950 ramp

primary

#3333B5

secondary

#C6C67D

accent

#DF48DF

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3333B5

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

Preview Lab → · Contrast checker → · Palette generator →