#333FA1#333FA1

#333FA1 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.158 H 272.3°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#333FA1
RGB	rgb(51, 63, 161)
HSL	hsl(233, 52%, 42%)
HSV	hsv(233, 68%, 63%)
CMYK	cmyk(68.3%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(31.42, 28.25, -54.62)
CIE-LCH	lch(31.42, 61.49, 297.34°)
OKLab	oklab(41.99% 0.0064 -0.1574)
OKLCH	oklch(41.99% 0.158 272.3)
XYZ	xyz(9.5736, 6.8311, 34.5253)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FA1 #A19533

analogous

#3376A1 #333FA1 #5E33A1

triadic

#333FA1 #A1333F #3FA133

tetradic

#333FA1 #A13376 #A19533 #33A15E

square

#333FA1 #A13376 #A19533 #33A15E

split-complementary

#333FA1 #A15E33 #76A133

monochromatic

#161B44 #242D73 #333FA1 #4B59C6 #7A84D5

Accessibility & contrast

On white

8.87

#333FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#333FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FA1

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FA1	#FFFFFF	#000000	##FFFFFF
##333FA1	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA4

Deuteranopia (green-blind)

#00459F

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #333fa1;
/* rgb */ color: rgb(51, 63, 161);
/* oklch */ color: oklch(42.0% 0.158 272.3);

Tailwind

colors: {
  custom: {
    50: '#7974be',
    500: '#333fa1',
    950: '#000000',
  },
}

SCSS

$custom: #333fa1;
$custom-light: #7974be;
$custom-dark: #000000;

JSON

{
  "hex": "#333fa1",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 233.455,
    "s": 51.887,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41994,
    "c": 0.15757,
    "h": 272.3
  },
  "luminance": 0.06832
}

Semantic roles & 50–950 ramp

primary

#333FA1

secondary

#BDB572

accent

#CC4CDB

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #333FA1

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

Preview Lab → · Contrast checker → · Palette generator →