#3339AC#3339AC

#3339AC is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.180 H 273.3°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#3339AC
RGB	rgb(51, 57, 172)
HSL	hsl(237, 54%, 44%)
HSV	hsv(237, 70%, 67%)
CMYK	cmyk(70.3%, 66.9%, 0%, 32.5%)
CIE-LAB	lab(30.90, 36.03, -62.09)
CIE-LCH	lch(30.90, 71.79, 300.12°)
OKLab	oklab(41.9% 0.0104 -0.1794)
OKLCH	oklch(41.9% 0.18 273.3)
XYZ	xyz(10.2723, 6.6076, 39.7558)
Luminance	0.0661 (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

#3339AC #ACA633

analogous

#3375AC #3339AC #6933AC

triadic

#3339AC #AC3339 #39AC33

tetradic

#3339AC #AC3375 #ACA633 #33AC69

square

#3339AC #AC3375 #ACA633 #33AC69

split-complementary

#3339AC #AC6933 #75AC33

monochromatic

#171A4E #25297D #3339AC #5157CB #8084D9

Accessibility & contrast

On white

9.04

#3339AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3339AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339AC

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339AC	#FFFFFF	#000000	##FFFFFF
##3339AC	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3339ac;
/* rgb */ color: rgb(51, 57, 172);
/* oklch */ color: oklch(41.9% 0.180 273.3);

Tailwind

colors: {
  custom: {
    50: '#7c70c6',
    500: '#3339ac',
    950: '#000000',
  },
}

SCSS

$custom: #3339ac;
$custom-light: #7c70c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3339ac",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 172
  },
  "hsl": {
    "h": 237.025,
    "s": 54.26,
    "l": 43.725
  },
  "oklch": {
    "l": 0.41903,
    "c": 0.17968,
    "h": 273.3
  },
  "luminance": 0.06609
}

Semantic roles & 50–950 ramp

primary

#3339AC

secondary

#C2BF78

accent

#D64ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3339AC

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

Preview Lab → · Contrast checker → · Palette generator →