#3333B7#3333B7

#3333B7 is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.0% C 0.200 H 273.6°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#3333B7
RGB	rgb(51, 51, 183)
HSL	hsl(240, 56%, 46%)
HSV	hsv(240, 72%, 72%)
CMYK	cmyk(72.1%, 72.1%, 0%, 28.2%)
CIE-LAB	lab(30.61, 43.42, -69.11)
CIE-LCH	lch(30.61, 81.62, 302.14°)
OKLab	oklab(42.02% 0.0126 -0.1999)
OKLCH	oklch(42.02% 0.2 273.6)
XYZ	xyz(11.0935, 6.4893, 45.4585)
Luminance	0.0649 (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

#3333B7 #B7B733

analogous

#3375B7 #3333B7 #7533B7

triadic

#3333B7 #B73333 #33B733

tetradic

#3333B7 #B73375 #B7B733 #33B775

square

#3333B7 #B73375 #B7B733 #33B775

split-complementary

#3333B7 #B77533 #75B733

monochromatic

#181857 #262687 #3333B7 #5757D0 #8787DE

Accessibility & contrast

On white

9.14

#3333B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3333B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B7

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B7	#FFFFFF	#000000	##FFFFFF
##3333B7	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBB

Deuteranopia (green-blind)

#0042B5

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3333b7;
/* rgb */ color: rgb(51, 51, 183);
/* oklch */ color: oklch(42.0% 0.200 273.6);

Tailwind

colors: {
  custom: {
    50: '#7f6cce',
    500: '#3333b7',
    950: '#000000',
  },
}

SCSS

$custom: #3333b7;
$custom-light: #7f6cce;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b7",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 183
  },
  "hsl": {
    "h": 240,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42018,
    "c": 0.20028,
    "h": 273.6
  },
  "luminance": 0.0649
}

Semantic roles & 50–950 ramp

primary

#3333B7

secondary

#C7C77F

accent

#E048E0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3333B7

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

Preview Lab → · Contrast checker → · Palette generator →