#3337B8#3337B8

#3337B8 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.197 H 273.0°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#3337B8
RGB	rgb(51, 55, 184)
HSL	hsl(238, 57%, 46%)
HSV	hsv(238, 72%, 72%)
CMYK	cmyk(72.3%, 70.1%, 0%, 27.8%)
CIE-LAB	lab(31.57, 41.40, -68.13)
CIE-LCH	lch(31.57, 79.73, 301.29°)
OKLab	oklab(42.73% 0.0102 -0.197)
OKLCH	oklch(42.73% 0.197 273)
XYZ	xyz(11.3803, 6.8957, 46.0694)
Luminance	0.0690 (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

#3337B8 #B8B433

analogous

#3379B8 #3337B8 #7133B8

triadic

#3337B8 #B83337 #37B833

tetradic

#3337B8 #B83379 #B8B433 #33B871

square

#3337B8 #B83379 #B8B433 #33B871

split-complementary

#3337B8 #B87133 #79B833

monochromatic

#181A58 #262988 #3337B8 #585BD1 #888ADE

Accessibility & contrast

On white

8.83

#3337B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#3337B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337B8

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337B8	#FFFFFF	#000000	##FFFFFF
##3337B8	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0044B6

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3337b8;
/* rgb */ color: rgb(51, 55, 184);
/* oklch */ color: oklch(42.7% 0.197 273.0);

Tailwind

colors: {
  custom: {
    50: '#7e6fce',
    500: '#3337b8',
    950: '#000000',
  },
}

SCSS

$custom: #3337b8;
$custom-light: #7e6fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3337b8",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 184
  },
  "hsl": {
    "h": 238.195,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42731,
    "c": 0.19731,
    "h": 273
  },
  "luminance": 0.06897
}

Semantic roles & 50–950 ramp

primary

#3337B8

secondary

#C8C67F

accent

#DB48E0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3337B8

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

Preview Lab → · Contrast checker → · Palette generator →