#3939A9#3939A9

#3939A9 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.174 H 275.9°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX#3939A9
RGBrgb(57, 57, 169)
HSLhsl(240, 50%, 44%)
HSVhsv(240, 66%, 66%)
CMYKcmyk(66.3%, 66.3%, 0%, 33.7%)
CIE-LABlab(31.02, 35.78, -60.08)
CIE-LCHlch(31.02, 69.93, 300.78°)
OKLaboklab(42.01% 0.0178 -0.1733)
OKLCHoklch(42.01% 0.174 275.9)
XYZxyz(10.3096, 6.6598, 38.2706)
Luminance0.0666 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3939A9 #A9A939
analogous
#3971A9 #3939A9 #7139A9
triadic
#3939A9 #A93939 #39A939
tetradic
#3939A9 #A93971 #A9A939 #39A971
square
#3939A9 #A93971 #A9A939 #39A971
split-complementary
#3939A9 #A97139 #71A939
monochromatic
#1A1A4D #2A2A7B #3939A9 #5858C7 #8686D6

Accessibility & contrast

On white

9.00
#3939A9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.33
#3939A9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939A9
9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3939A9#FFFFFF#000000##FFFFFF
##3939A91.009.002.339.00
#FFFFFF9.001.0021.001.00
#0000002.3321.001.0021.00
##FFFFFF9.001.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004EAD
Deuteranopia (green-blind)
#0044A7
Tritanopia (blue-blind)
#00566C
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #3939a9;
/* rgb */ color: rgb(57, 57, 169);
/* oklch */ color: oklch(42.0% 0.174 275.9);
Tailwind
colors: {
  custom: {
    50: '#7d70c4',
    500: '#3939a9',
    950: '#000000',
  },
}
SCSS
$custom: #3939a9;
$custom-light: #7d70c4;
$custom-dark: #000000;
JSON
{
  "hex": "#3939a9",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 169
  },
  "hsl": {
    "h": 240,
    "s": 49.558,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42013,
    "c": 0.17423,
    "h": 275.9
  },
  "luminance": 0.06661
}

Semantic roles & 50–950 ramp

primary
#3939A9
secondary
#C0C07E
accent
#D94FD9
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #3939A9

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

Preview Lab → · Contrast checker → · Palette generator →

#3939A9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva