#3339AD#3339AD

#3339AD is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.0% C 0.181 H 273.3°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#3339AD
RGB	rgb(51, 57, 173)
HSL	hsl(237, 54%, 44%)
HSV	hsv(237, 71%, 68%)
CMYK	cmyk(70.5%, 67.1%, 0%, 32.2%)
CIE-LAB	lab(30.99, 36.38, -62.54)
CIE-LCH	lch(30.99, 72.35, 300.18°)
OKLab	oklab(42% 0.0103 -0.1807)
OKLCH	oklch(42% 0.181 273.3)
XYZ	xyz(10.3687, 6.6462, 40.2635)
Luminance	0.0665 (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

#3339AD #ADA733

analogous

#3376AD #3339AD #6A33AD

triadic

#3339AD #AD3339 #39AD33

tetradic

#3339AD #AD3376 #ADA733 #33AD6A

square

#3339AD #AD3376 #ADA733 #33AD6A

split-complementary

#3339AD #AD6A33 #76AD33

monochromatic

#171A4E #25297E #3339AD #5157CC #8185DA

Accessibility & contrast

On white

9.02

#3339AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3339AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339AD

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339AD	#FFFFFF	#000000	##FFFFFF
##3339AD	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB1

Deuteranopia (green-blind)

#0043AB

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3339ad;
/* rgb */ color: rgb(51, 57, 173);
/* oklch */ color: oklch(42.0% 0.181 273.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3339ad",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 173
  },
  "hsl": {
    "h": 237.049,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41998,
    "c": 0.18099,
    "h": 273.3
  },
  "luminance": 0.06647
}

Semantic roles & 50–950 ramp

primary

#3339AD

secondary

#C3BF79

accent

#D74ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3339AD

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

Preview Lab → · Contrast checker → · Palette generator →