#3339B9#3339B9

#3339B9 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.1% C 0.196 H 272.6°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#3339B9
RGB	rgb(51, 57, 185)
HSL	hsl(237, 57%, 46%)
HSV	hsv(237, 72%, 73%)
CMYK	cmyk(72.4%, 69.2%, 0%, 27.5%)
CIE-LAB	lab(32.10, 40.54, -67.84)
CIE-LCH	lch(32.10, 79.03, 300.86°)
OKLab	oklab(43.15% 0.009 -0.1962)
OKLCH	oklch(43.15% 0.196 272.6)
XYZ	xyz(11.5824, 7.1317, 46.6557)
Luminance	0.0713 (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

#3339B9 #B9B333

analogous

#337CB9 #3339B9 #7033B9

triadic

#3339B9 #B93339 #39B933

tetradic

#3339B9 #B9337C #B9B333 #33B970

square

#3339B9 #B9337C #B9B333 #33B970

split-complementary

#3339B9 #B97033 #7CB933

monochromatic

#191B59 #262A89 #3339B9 #585ED1 #888CDE

Accessibility & contrast

On white

8.65

#3339B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3339B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339B9

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339B9	#FFFFFF	#000000	##FFFFFF
##3339B9	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BD

Deuteranopia (green-blind)

#0045B7

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3339b9;
/* rgb */ color: rgb(51, 57, 185);
/* oklch */ color: oklch(43.1% 0.196 272.6);

Tailwind

colors: {
  custom: {
    50: '#7e70cf',
    500: '#3339b9',
    950: '#000000',
  },
}

SCSS

$custom: #3339b9;
$custom-light: #7e70cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3339b9",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 185
  },
  "hsl": {
    "h": 237.313,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43147,
    "c": 0.19639,
    "h": 272.6
  },
  "luminance": 0.07133
}

Semantic roles & 50–950 ramp

primary

#3339B9

secondary

#C8C580

accent

#D948E0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3339B9

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

Preview Lab → · Contrast checker → · Palette generator →