#3333AA#3333AA

#3333AA is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.7% C 0.184 H 274.5°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#3333AA
RGB	rgb(51, 51, 170)
HSL	hsl(240, 54%, 43%)
HSV	hsv(240, 70%, 67%)
CMYK	cmyk(70%, 70%, 0%, 33.3%)
CIE-LAB	lab(29.34, 39.03, -63.44)
CIE-LCH	lch(29.34, 74.49, 301.60°)
OKLab	oklab(40.72% 0.0146 -0.1833)
OKLCH	oklch(40.72% 0.184 274.5)
XYZ	xyz(9.8024, 5.9728, 38.6587)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.14

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3333AA #AAAA33

analogous

#336EAA #3333AA #6E33AA

triadic

#3333AA #AA3333 #33AA33

tetradic

#3333AA #AA336E #AAAA33 #33AA6E

square

#3333AA #AA336E #AAAA33 #33AA6E

split-complementary

#3333AA #AA6E33 #6EAA33

monochromatic

#17174C #25257B #3333AA #5050CA #7F7FD9

Accessibility & contrast

On white

9.57

#3333AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#3333AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3333AA

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3333AA	#FFFFFF	#000000	##FFFFFF
##3333AA	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAE

Deuteranopia (green-blind)

#0040A8

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3333aa;
/* rgb */ color: rgb(51, 51, 170);
/* oklch */ color: oklch(40.7% 0.184 274.5);

Tailwind

colors: {
  custom: {
    50: '#7c6bc4',
    500: '#3333aa',
    950: '#000000',
  },
}

SCSS

$custom: #3333aa;
$custom-light: #7c6bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3333aa",
  "rgb": {
    "r": 51,
    "g": 51,
    "b": 170
  },
  "hsl": {
    "h": 240,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.40723,
    "c": 0.18392,
    "h": 274.5
  },
  "luminance": 0.05974
}

Semantic roles & 50–950 ramp

primary

#3333AA

secondary

#C2C277

accent

#DD4BDD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3333AA

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

Preview Lab → · Contrast checker → · Palette generator →