#333399#333399

#333399 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.1% C 0.162 H 275.9°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#333399
RGB	rgb(51, 51, 153)
HSL	hsl(240, 50%, 40%)
HSV	hsv(240, 67%, 60%)
CMYK	cmyk(66.7%, 66.7%, 0%, 40%)
CIE-LAB	lab(27.77, 33.16, -55.73)
CIE-LCH	lch(27.77, 64.85, 300.75°)
OKLab	oklab(39.1% 0.0167 -0.1608)
OKLCH	oklch(39.1% 0.162 275.9)
XYZ	xyz(8.2970, 5.3707, 30.7302)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333399 #999933

analogous

#336699 #333399 #663399

triadic

#333399 #993333 #339933

tetradic

#333399 #993366 #999933 #339966

square

#333399 #993366 #999933 #339966

split-complementary

#333399 #996633 #669933

monochromatic

#14143D #24246B #333399 #4747C2 #7575D1

Accessibility & contrast

On white

10.12

#333399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#333399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333399

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333399	#FFFFFF	#000000	##FFFFFF
##333399	1.00	10.12	2.07	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469C

Deuteranopia (green-blind)

#003D97

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #333399;
/* rgb */ color: rgb(51, 51, 153);
/* oklch */ color: oklch(39.1% 0.162 275.9);

Tailwind

colors: {
  custom: {
    50: '#786bb8',
    500: '#333399',
    950: '#000000',
  },
}

SCSS

$custom: #333399;
$custom-light: #786bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#333399",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 153
  },
  "hsl": {
    "h": 240,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.39099,
    "c": 0.16164,
    "h": 275.9
  },
  "luminance": 0.05371
}

Semantic roles & 50–950 ramp

primary

#333399

secondary

#B9B96E

accent

#DA4EDA

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0611

muted

#7C7A80

Preview Lab

Preview with #333399

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

Preview Lab → · Contrast checker → · Palette generator →