#3333BC#3333BC

#3333BC is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 42.5% C 0.206 H 273.3°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#3333BC
RGB	rgb(51, 51, 188)
HSL	hsl(240, 57%, 47%)
HSV	hsv(240, 73%, 74%)
CMYK	cmyk(72.9%, 72.9%, 0%, 26.3%)
CIE-LAB	lab(31.12, 45.09, -71.24)
CIE-LCH	lch(31.12, 84.31, 302.33°)
OKLab	oklab(42.53% 0.0118 -0.2061)
OKLCH	oklch(42.53% 0.206 273.3)
XYZ	xyz(11.6231, 6.7011, 48.2481)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.69

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3333BC #BCBC33

analogous

#3378BC #3333BC #7833BC

triadic

#3333BC #BC3333 #33BC33

tetradic

#3333BC #BC3378 #BCBC33 #33BC78

square

#3333BC #BC3378 #BCBC33 #33BC78

split-complementary

#3333BC #BC7833 #78BC33

monochromatic

#19195C #26268C #3333BC #5A5AD2 #8A8ADF

Accessibility & contrast

On white

8.97

#3333BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3333BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333BC

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333BC	#FFFFFF	#000000	##FFFFFF
##3333BC	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C0

Deuteranopia (green-blind)

#0043BA

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3333bc;
/* rgb */ color: rgb(51, 51, 188);
/* oklch */ color: oklch(42.5% 0.206 273.3);

Tailwind

colors: {
  custom: {
    50: '#806cd1',
    500: '#3333bc',
    950: '#000000',
  },
}

SCSS

$custom: #3333bc;
$custom-light: #806cd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3333bc",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 188
  },
  "hsl": {
    "h": 240,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.42527,
    "c": 0.20644,
    "h": 273.3
  },
  "luminance": 0.06702
}

Semantic roles & 50–950 ramp

primary

#3333BC

secondary

#C9C981

accent

#E147E1

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3333BC

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

Preview Lab → · Contrast checker → · Palette generator →