#3333AB#3333AB

#3333AB is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.8% C 0.185 H 274.5°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#3333AB
RGB	rgb(51, 51, 171)
HSL	hsl(240, 54%, 44%)
HSV	hsv(240, 70%, 67%)
CMYK	cmyk(70.2%, 70.2%, 0%, 32.9%)
CIE-LAB	lab(29.44, 39.37, -63.88)
CIE-LCH	lch(29.44, 75.04, 301.65°)
OKLab	oklab(40.82% 0.0144 -0.1846)
OKLCH	oklch(40.82% 0.185 274.5)
XYZ	xyz(9.8973, 6.0108, 39.1588)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.04

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3333AB #ABAB33

analogous

#336FAB #3333AB #6F33AB

triadic

#3333AB #AB3333 #33AB33

tetradic

#3333AB #AB336F #ABAB33 #33AB6F

square

#3333AB #AB336F #ABAB33 #33AB6F

split-complementary

#3333AB #AB6F33 #6FAB33

monochromatic

#17174D #25257C #3333AB #5050CB #7F7FD9

Accessibility & contrast

On white

9.54

#3333AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#3333AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333AB

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333AB	#FFFFFF	#000000	##FFFFFF
##3333AB	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAF

Deuteranopia (green-blind)

#0040A9

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3333ab;
/* rgb */ color: rgb(51, 51, 171);
/* oklch */ color: oklch(40.8% 0.185 274.5);

Tailwind

colors: {
  custom: {
    50: '#7c6cc5',
    500: '#3333ab',
    950: '#000000',
  },
}

SCSS

$custom: #3333ab;
$custom-light: #7c6cc5;
$custom-dark: #000000;

JSON

{
  "hex": "#3333ab",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 171
  },
  "hsl": {
    "h": 240,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.40821,
    "c": 0.18519,
    "h": 274.5
  },
  "luminance": 0.06012
}

Semantic roles & 50–950 ramp

primary

#3333AB

secondary

#C2C278

accent

#DD4ADD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333AB

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

Preview Lab → · Contrast checker → · Palette generator →