#3339B2#3339B2

#3339B2 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.5% C 0.187 H 273.0°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#3339B2
RGB	rgb(51, 57, 178)
HSL	hsl(237, 55%, 45%)
HSV	hsv(237, 71%, 70%)
CMYK	cmyk(71.3%, 68%, 0%, 30.2%)
CIE-LAB	lab(31.45, 38.12, -64.77)
CIE-LCH	lch(31.45, 75.15, 300.48°)
OKLab	oklab(42.47% 0.0098 -0.1872)
OKLCH	oklch(42.47% 0.187 273)
XYZ	xyz(10.8616, 6.8433, 42.8593)
Luminance	0.0684 (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

#3339B2 #B2AC33

analogous

#3379B2 #3339B2 #6C33B2

triadic

#3339B2 #B23339 #39B233

tetradic

#3339B2 #B23379 #B2AC33 #33B26C

square

#3339B2 #B23379 #B2AC33 #33B26C

split-complementary

#3339B2 #B26C33 #79B233

monochromatic

#181B53 #252A82 #3339B2 #545ACE #8488DC

Accessibility & contrast

On white

8.87

#3339B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3339B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339B2

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339B2	#FFFFFF	#000000	##FFFFFF
##3339B2	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3339b2;
/* rgb */ color: rgb(51, 57, 178);
/* oklch */ color: oklch(42.5% 0.187 273.0);

Tailwind

colors: {
  custom: {
    50: '#7d70ca',
    500: '#3339b2',
    950: '#000000',
  },
}

SCSS

$custom: #3339b2;
$custom-light: #7d70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3339b2",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 237.165,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.42472,
    "c": 0.18746,
    "h": 273
  },
  "luminance": 0.06844
}

Semantic roles & 50–950 ramp

primary

#3339B2

secondary

#C5C27C

accent

#D849DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3339B2

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

Preview Lab → · Contrast checker → · Palette generator →