#3337B1#3337B1

#3337B1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.0% C 0.188 H 273.4°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#3337B1
RGB	rgb(51, 55, 177)
HSL	hsl(238, 55%, 45%)
HSV	hsv(238, 71%, 69%)
CMYK	cmyk(71.2%, 68.9%, 0%, 30.6%)
CIE-LAB	lab(30.90, 39.00, -65.07)
CIE-LCH	lch(30.90, 75.86, 300.94°)
OKLab	oklab(42.05% 0.0111 -0.1881)
OKLCH	oklch(42.05% 0.188 273.4)
XYZ	xyz(10.6646, 6.6095, 42.3002)
Luminance	0.0661 (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

#3337B1 #B1AD33

analogous

#3376B1 #3337B1 #6E33B1

triadic

#3337B1 #B13337 #37B133

tetradic

#3337B1 #B13376 #B1AD33 #33B16E

square

#3337B1 #B13376 #B1AD33 #33B16E

split-complementary

#3337B1 #B16E33 #76B133

monochromatic

#181952 #252881 #3337B1 #5457CE #8386DB

Accessibility & contrast

On white

9.04

#3337B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3337B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337B1

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337B1	#FFFFFF	#000000	##FFFFFF
##3337B1	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB5

Deuteranopia (green-blind)

#0043AF

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3337b1;
/* rgb */ color: rgb(51, 55, 177);
/* oklch */ color: oklch(42.0% 0.188 273.4);

Tailwind

colors: {
  custom: {
    50: '#7d6ec9',
    500: '#3337b1',
    950: '#000000',
  },
}

SCSS

$custom: #3337b1;
$custom-light: #7d6ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3337b1",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 177
  },
  "hsl": {
    "h": 238.095,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42048,
    "c": 0.18843,
    "h": 273.4
  },
  "luminance": 0.06611
}

Semantic roles & 50–950 ramp

primary

#3337B1

secondary

#C5C27B

accent

#DA49DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3337B1

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

Preview Lab → · Contrast checker → · Palette generator →