#3333A8#3333A8

#3333A8 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.5% C 0.181 H 274.7°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#3333A8
RGB	rgb(51, 51, 168)
HSL	hsl(240, 53%, 43%)
HSV	hsv(240, 70%, 66%)
CMYK	cmyk(69.6%, 69.6%, 0%, 34.1%)
CIE-LAB	lab(29.15, 38.35, -62.55)
CIE-LCH	lch(29.15, 73.37, 301.51°)
OKLab	oklab(40.53% 0.0149 -0.1807)
OKLCH	oklch(40.53% 0.181 274.7)
XYZ	xyz(9.6146, 5.8977, 37.6699)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.35

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3333A8 #A8A833

analogous

#336DA8 #3333A8 #6D33A8

triadic

#3333A8 #A83333 #33A833

tetradic

#3333A8 #A8336D #A8A833 #33A86D

square

#3333A8 #A8336D #A8A833 #33A86D

split-complementary

#3333A8 #A86D33 #6DA833

monochromatic

#16164A #252579 #3333A8 #4F4FC9 #7E7ED8

Accessibility & contrast

On white

9.63

#3333A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3333A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333A8

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333A8	#FFFFFF	#000000	##FFFFFF
##3333A8	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAC

Deuteranopia (green-blind)

#003FA6

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3333a8;
/* rgb */ color: rgb(51, 51, 168);
/* oklch */ color: oklch(40.5% 0.181 274.7);

Tailwind

colors: {
  custom: {
    50: '#7b6bc3',
    500: '#3333a8',
    950: '#000000',
  },
}

SCSS

$custom: #3333a8;
$custom-light: #7b6bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#3333a8",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 168
  },
  "hsl": {
    "h": 240,
    "s": 53.425,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40528,
    "c": 0.18135,
    "h": 274.7
  },
  "luminance": 0.05899
}

Semantic roles & 50–950 ramp

primary

#3333A8

secondary

#C1C176

accent

#DD4BDD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333A8

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

Preview Lab → · Contrast checker → · Palette generator →