#333DB1#333DB1

#333DB1 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.182 H 272.3°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#333DB1
RGB	rgb(51, 61, 177)
HSL	hsl(235, 55%, 45%)
HSV	hsv(235, 71%, 69%)
CMYK	cmyk(71.2%, 65.5%, 0%, 30.6%)
CIE-LAB	lab(32.29, 35.27, -62.79)
CIE-LCH	lch(32.29, 72.02, 299.32°)
OKLab	oklab(43.06% 0.0072 -0.1814)
OKLCH	oklch(43.06% 0.182 272.3)
XYZ	xyz(10.9671, 7.2145, 42.4010)
Luminance	0.0722 (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

#333DB1 #B1A733

analogous

#337CB1 #333DB1 #6833B1

triadic

#333DB1 #B1333D #3DB133

tetradic

#333DB1 #B1337C #B1A733 #33B168

square

#333DB1 #B1337C #B1A733 #33B168

split-complementary

#333DB1 #B16833 #7CB133

monochromatic

#181C52 #252D81 #333DB1 #545DCE #838ADB

Accessibility & contrast

On white

8.60

#333DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#333DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DB1

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DB1	#FFFFFF	#000000	##FFFFFF
##333DB1	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0046AF

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333db1;
/* rgb */ color: rgb(51, 61, 177);
/* oklch */ color: oklch(43.1% 0.182 272.3);

Tailwind

colors: {
  custom: {
    50: '#7c72c9',
    500: '#333db1',
    950: '#000000',
  },
}

SCSS

$custom: #333db1;
$custom-light: #7c72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#333db1",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 177
  },
  "hsl": {
    "h": 235.238,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43057,
    "c": 0.18155,
    "h": 272.3
  },
  "luminance": 0.07216
}

Semantic roles & 50–950 ramp

primary

#333DB1

secondary

#C5BF7B

accent

#D349DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333DB1

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

Preview Lab → · Contrast checker → · Palette generator →