#333EB3#333EB3

#333EB3 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.183 H 272.0°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#333EB3
RGB	rgb(51, 62, 179)
HSL	hsl(235, 56%, 45%)
HSV	hsv(235, 72%, 70%)
CMYK	cmyk(71.5%, 65.4%, 0%, 29.8%)
CIE-LAB	lab(32.71, 35.35, -63.30)
CIE-LCH	lch(32.71, 72.50, 299.18°)
OKLab	oklab(43.42% 0.0064 -0.1829)
OKLCH	oklch(43.42% 0.183 272)
XYZ	xyz(11.2218, 7.4026, 43.4765)
Luminance	0.0740 (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

#333EB3 #B3A833

analogous

#337EB3 #333EB3 #6833B3

triadic

#333EB3 #B3333E #3EB333

tetradic

#333EB3 #B3337E #B3A833 #33B368

square

#333EB3 #B3337E #B3A833 #33B368

split-complementary

#333EB3 #B36833 #7EB333

monochromatic

#181D54 #252E83 #333EB3 #555FCE #848CDC

Accessibility & contrast

On white

8.47

#333EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#333EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333EB3

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333EB3	#FFFFFF	#000000	##FFFFFF
##333EB3	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333eb3;
/* rgb */ color: rgb(51, 62, 179);
/* oklch */ color: oklch(43.4% 0.183 272.0);

Tailwind

colors: {
  custom: {
    50: '#7d73cb',
    500: '#333eb3',
    950: '#000000',
  },
}

SCSS

$custom: #333eb3;
$custom-light: #7d73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#333eb3",
  "rgb": {
    "r": 51,
    "g": 62,
    "b": 179
  },
  "hsl": {
    "h": 234.844,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43416,
    "c": 0.183,
    "h": 272
  },
  "luminance": 0.07404
}

Semantic roles & 50–950 ramp

primary

#333EB3

secondary

#C6BF7C

accent

#D249DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333EB3

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

Preview Lab → · Contrast checker → · Palette generator →