#333381#333381

#333381 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.128 H 278.1°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#333381
RGB	rgb(51, 51, 129)
HSL	hsl(240, 43%, 35%)
HSV	hsv(240, 60%, 51%)
CMYK	cmyk(60.5%, 60.5%, 0%, 49.4%)
CIE-LAB	lab(25.73, 24.70, -44.19)
CIE-LCH	lch(25.73, 50.62, 299.21°)
OKLab	oklab(36.97% 0.0181 -0.1269)
OKLCH	oklch(36.97% 0.128 278.1)
XYZ	xyz(6.5103, 4.6560, 21.3203)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333381 #818133

analogous

#335A81 #333381 #5A3381

triadic

#333381 #813333 #338133

tetradic

#333381 #81335A #818133 #33815A

square

#333381 #81335A #818133 #33815A

split-complementary

#333381 #815A33 #5A8133

monochromatic

#101029 #222255 #333381 #4444AD #6A6AC4

Accessibility & contrast

On white

10.87

#333381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#333381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333381

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333381	#FFFFFF	#000000	##FFFFFF
##333381	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004084

Deuteranopia (green-blind)

#003A7F

Tritanopia (blue-blind)

#004655

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #333381;
/* rgb */ color: rgb(51, 51, 129);
/* oklch */ color: oklch(37.0% 0.128 278.1);

Tailwind

colors: {
  custom: {
    50: '#736aa6',
    500: '#333381',
    950: '#000000',
  },
}

SCSS

$custom: #333381;
$custom-light: #736aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#333381",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 129
  },
  "hsl": {
    "h": 240,
    "s": 43.333,
    "l": 35.294
  },
  "oklch": {
    "l": 0.36973,
    "c": 0.12816,
    "h": 278.1
  },
  "luminance": 0.04656
}

Semantic roles & 50–950 ramp

primary

#333381

secondary

#ACAC64

accent

#D355D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#09060F

muted

#7B7A7F

Preview Lab

Preview with #333381

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

Preview Lab → · Contrast checker → · Palette generator →