#3337B3#3337B3

#3337B3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.2% C 0.191 H 273.3°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3337B3
RGB	rgb(51, 55, 179)
HSL	hsl(238, 56%, 45%)
HSV	hsv(238, 72%, 70%)
CMYK	cmyk(71.5%, 69.3%, 0%, 29.8%)
CIE-LAB	lab(31.09, 39.69, -65.95)
CIE-LCH	lch(31.09, 76.97, 301.04°)
OKLab	oklab(42.24% 0.0109 -0.1907)
OKLCH	oklch(42.24% 0.191 273.3)
XYZ	xyz(10.8654, 6.6898, 43.3577)
Luminance	0.0669 (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

#3337B3 #B3AF33

analogous

#3377B3 #3337B3 #6F33B3

triadic

#3337B3 #B33337 #37B333

tetradic

#3337B3 #B33377 #B3AF33 #33B36F

square

#3337B3 #B33377 #B3AF33 #33B36F

split-complementary

#3337B3 #B36F33 #77B333

monochromatic

#181A54 #252883 #3337B3 #5559CE #8487DC

Accessibility & contrast

On white

8.98

#3337B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3337B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337B3

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337B3	#FFFFFF	#000000	##FFFFFF
##3337B3	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB7

Deuteranopia (green-blind)

#0043B1

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3337b3;
/* rgb */ color: rgb(51, 55, 179);
/* oklch */ color: oklch(42.2% 0.191 273.3);

Tailwind

colors: {
  custom: {
    50: '#7d6ecb',
    500: '#3337b3',
    950: '#000000',
  },
}

SCSS

$custom: #3337b3;
$custom-light: #7d6ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#3337b3",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 179
  },
  "hsl": {
    "h": 238.125,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42242,
    "c": 0.19098,
    "h": 273.3
  },
  "luminance": 0.06691
}

Semantic roles & 50–950 ramp

primary

#3337B3

secondary

#C6C37C

accent

#DA49DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3337B3

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

Preview Lab → · Contrast checker → · Palette generator →