#3333B8#3333B8

#3333B8 is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.1% C 0.202 H 273.5°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3333B8
RGB	rgb(51, 51, 184)
HSL	hsl(240, 57%, 46%)
HSV	hsv(240, 72%, 72%)
CMYK	cmyk(72.3%, 72.3%, 0%, 27.8%)
CIE-LAB	lab(30.71, 43.76, -69.54)
CIE-LCH	lch(30.71, 82.16, 302.18°)
OKLab	oklab(42.12% 0.0124 -0.2011)
OKLCH	oklch(42.12% 0.202 273.5)
XYZ	xyz(11.1979, 6.5310, 46.0086)
Luminance	0.0653 (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

#3333B8 #B8B833

analogous

#3375B8 #3333B8 #7533B8

triadic

#3333B8 #B83333 #33B833

tetradic

#3333B8 #B83375 #B8B833 #33B875

square

#3333B8 #B83375 #B8B833 #33B875

split-complementary

#3333B8 #B87533 #75B833

monochromatic

#181858 #262688 #3333B8 #5858D1 #8888DE

Accessibility & contrast

On white

9.11

#3333B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3333B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B8

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B8	#FFFFFF	#000000	##FFFFFF
##3333B8	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBC

Deuteranopia (green-blind)

#0042B6

Tritanopia (blue-blind)

#005972

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3333b8;
/* rgb */ color: rgb(51, 51, 184);
/* oklch */ color: oklch(42.1% 0.202 273.5);

Tailwind

colors: {
  custom: {
    50: '#7f6ccf',
    500: '#3333b8',
    950: '#000000',
  },
}

SCSS

$custom: #3333b8;
$custom-light: #7f6ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b8",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 184
  },
  "hsl": {
    "h": 240,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42119,
    "c": 0.20151,
    "h": 273.5
  },
  "luminance": 0.06532
}

Semantic roles & 50–950 ramp

primary

#3333B8

secondary

#C8C87F

accent

#E048E0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3333B8

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

Preview Lab → · Contrast checker → · Palette generator →