#3337B0#3337B0

#3337B0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.0% C 0.187 H 273.4°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#3337B0
RGB	rgb(51, 55, 176)
HSL	hsl(238, 55%, 45%)
HSV	hsv(238, 71%, 69%)
CMYK	cmyk(71%, 68.8%, 0%, 31%)
CIE-LAB	lab(30.81, 38.66, -64.63)
CIE-LCH	lch(30.81, 75.31, 300.88°)
OKLab	oklab(41.95% 0.0113 -0.1868)
OKLCH	oklch(41.95% 0.187 273.4)
XYZ	xyz(10.5653, 6.5697, 41.7772)
Luminance	0.0657 (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

#3337B0 #B0AC33

analogous

#3376B0 #3337B0 #6E33B0

triadic

#3337B0 #B03337 #37B033

tetradic

#3337B0 #B03376 #B0AC33 #33B06E

square

#3337B0 #B03376 #B0AC33 #33B06E

split-complementary

#3337B0 #B06E33 #76B033

monochromatic

#181951 #252881 #3337B0 #5357CD #8285DB

Accessibility & contrast

On white

9.07

#3337B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3337B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337B0

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337B0	#FFFFFF	#000000	##FFFFFF
##3337B0	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB4

Deuteranopia (green-blind)

#0043AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3337b0;
/* rgb */ color: rgb(51, 55, 176);
/* oklch */ color: oklch(42.0% 0.187 273.4);

Tailwind

colors: {
  custom: {
    50: '#7d6ec9',
    500: '#3337b0',
    950: '#000000',
  },
}

SCSS

$custom: #3337b0;
$custom-light: #7d6ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3337b0",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 176
  },
  "hsl": {
    "h": 238.08,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41951,
    "c": 0.18715,
    "h": 273.4
  },
  "luminance": 0.06571
}

Semantic roles & 50–950 ramp

primary

#3337B0

secondary

#C4C27B

accent

#DA49DE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3337B0

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

Preview Lab → · Contrast checker → · Palette generator →