#3333B0#3333B0

#3333B0 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.3% C 0.192 H 274.1°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#3333B0
RGB	rgb(51, 51, 176)
HSL	hsl(240, 55%, 45%)
HSV	hsv(240, 71%, 69%)
CMYK	cmyk(71%, 71%, 0%, 31%)
CIE-LAB	lab(29.92, 41.07, -66.08)
CIE-LCH	lch(29.92, 77.80, 301.86°)
OKLab	oklab(41.32% 0.0137 -0.191)
OKLCH	oklch(41.32% 0.192 274.1)
XYZ	xyz(10.3829, 6.2050, 41.7164)
Luminance	0.0621 (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

#3333B0 #B0B033

analogous

#3372B0 #3333B0 #7233B0

triadic

#3333B0 #B03333 #33B033

tetradic

#3333B0 #B03372 #B0B033 #33B072

square

#3333B0 #B03372 #B0B033 #33B072

split-complementary

#3333B0 #B07233 #72B033

monochromatic

#181851 #252581 #3333B0 #5353CD #8282DB

Accessibility & contrast

On white

9.37

#3333B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#3333B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333B0

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333B0	#FFFFFF	#000000	##FFFFFF
##3333B0	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB4

Deuteranopia (green-blind)

#0041AE

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3333b0;
/* rgb */ color: rgb(51, 51, 176);
/* oklch */ color: oklch(41.3% 0.192 274.1);

Tailwind

colors: {
  custom: {
    50: '#7d6cc9',
    500: '#3333b0',
    950: '#000000',
  },
}

SCSS

$custom: #3333b0;
$custom-light: #7d6cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3333b0",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 176
  },
  "hsl": {
    "h": 240,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41316,
    "c": 0.19154,
    "h": 274.1
  },
  "luminance": 0.06206
}

Semantic roles & 50–950 ramp

primary

#3333B0

secondary

#C4C47B

accent

#DE49DE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333B0

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

Preview Lab → · Contrast checker → · Palette generator →