#333783#333783

#333783 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.126 H 276.3°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#333783
RGB	rgb(51, 55, 131)
HSL	hsl(237, 44%, 36%)
HSV	hsv(237, 61%, 51%)
CMYK	cmyk(61.1%, 58%, 0%, 48.6%)
CIE-LAB	lab(26.95, 22.73, -43.47)
CIE-LCH	lch(26.95, 49.05, 297.60°)
OKLab	oklab(37.92% 0.0139 -0.1247)
OKLCH	oklch(37.92% 0.126 276.3)
XYZ	xyz(6.8268, 5.0744, 22.0880)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333783 #837F33

analogous

#335F83 #333783 #573383

triadic

#333783 #833337 #378333

tetradic

#333783 #83335F #837F33 #338357

square

#333783 #83335F #837F33 #338357

split-complementary

#333783 #835733 #5F8333

monochromatic

#11122B #222557 #333783 #4449AF #6B70C5

Accessibility & contrast

On white

10.42

#333783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#333783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333783

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333783	#FFFFFF	#000000	##FFFFFF
##333783	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004386

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #333783;
/* rgb */ color: rgb(51, 55, 131);
/* oklch */ color: oklch(37.9% 0.126 276.3);

Tailwind

colors: {
  custom: {
    50: '#736da8',
    500: '#333783',
    950: '#000000',
  },
}

SCSS

$custom: #333783;
$custom-light: #736da8;
$custom-dark: #000000;

JSON

{
  "hex": "#333783",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 131
  },
  "hsl": {
    "h": 237,
    "s": 43.956,
    "l": 35.686
  },
  "oklch": {
    "l": 0.37924,
    "c": 0.1255,
    "h": 276.3
  },
  "luminance": 0.05075
}

Semantic roles & 50–950 ramp

primary

#333783

secondary

#ADAA65

accent

#CD54D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #333783

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

Preview Lab → · Contrast checker → · Palette generator →