#3337B4#3337B4

#3337B4 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.3% C 0.192 H 273.2°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#3337B4
RGB	rgb(51, 55, 180)
HSL	hsl(238, 56%, 45%)
HSV	hsv(238, 72%, 71%)
CMYK	cmyk(71.7%, 69.4%, 0%, 29.4%)
CIE-LAB	lab(31.19, 40.03, -66.39)
CIE-LCH	lch(31.19, 77.53, 301.09°)
OKLab	oklab(42.34% 0.0108 -0.1919)
OKLCH	oklch(42.34% 0.192 273.2)
XYZ	xyz(10.9669, 6.7304, 43.8923)
Luminance	0.0673 (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

#3337B4 #B4B033

analogous

#3377B4 #3337B4 #7033B4

triadic

#3337B4 #B43337 #37B433

tetradic

#3337B4 #B43377 #B4B033 #33B470

square

#3337B4 #B43377 #B4B033 #33B470

split-complementary

#3337B4 #B47033 #77B433

monochromatic

#181A55 #252884 #3337B4 #5559CF #8588DC

Accessibility & contrast

On white

8.95

#3337B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#3337B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337B4

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337B4	#FFFFFF	#000000	##FFFFFF
##3337B4	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB8

Deuteranopia (green-blind)

#0043B2

Tritanopia (blue-blind)

#005971

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3337b4;
/* rgb */ color: rgb(51, 55, 180);
/* oklch */ color: oklch(42.3% 0.192 273.2);

Tailwind

colors: {
  custom: {
    50: '#7e6ecc',
    500: '#3337b4',
    950: '#000000',
  },
}

SCSS

$custom: #3337b4;
$custom-light: #7e6ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#3337b4",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 180
  },
  "hsl": {
    "h": 238.14,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42339,
    "c": 0.19225,
    "h": 273.2
  },
  "luminance": 0.06731
}

Semantic roles & 50–950 ramp

primary

#3337B4

secondary

#C6C47D

accent

#DA49DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3337B4

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

Preview Lab → · Contrast checker → · Palette generator →