#3933B7#3933B7

#3933B7 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.4% C 0.199 H 275.8°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX#3933B7
RGBrgb(57, 51, 183)
HSLhsl(243, 56%, 46%)
HSVhsv(243, 72%, 72%)
CMYKcmyk(68.9%, 72.1%, 0%, 28.2%)
CIE-LABlab(31.01, 44.07, -68.45)
CIE-LCHlch(31.01, 81.40, 302.77°)
OKLaboklab(42.4% 0.02 -0.1978)
OKLCHoklch(42.4% 0.199 275.8)
XYZxyz(11.4156, 6.6554, 45.4736)
Luminance0.0666 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3933B7 #B1B733
analogous
#336FB7 #3933B7 #7B33B7
triadic
#3933B7 #B73933 #33B739
tetradic
#3933B7 #B7336F #B1B733 #33B77B
square
#3933B7 #B7336F #B1B733 #33B77B
split-complementary
#3933B7 #B77B33 #6FB733
monochromatic
#1B1857 #2A2687 #3933B7 #5D57D0 #8B87DE

Accessibility & contrast

On white

9.01
#3933B7 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.33
#3933B7 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3933B7
9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3933B7#FFFFFF#000000##FFFFFF
##3933B71.009.012.339.01
#FFFFFF9.011.0021.001.00
#0000002.3321.001.0021.00
##FFFFFF9.011.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004FBB
Deuteranopia (green-blind)
#0043B5
Tritanopia (blue-blind)
#005872
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #3933b7;
/* rgb */ color: rgb(57, 51, 183);
/* oklch */ color: oklch(42.4% 0.199 275.8);
Tailwind
colors: {
  custom: {
    50: '#816cce',
    500: '#3933b7',
    950: '#000000',
  },
}
SCSS
$custom: #3933b7;
$custom-light: #816cce;
$custom-dark: #000000;
JSON
{
  "hex": "#3933b7",
  "rgb": {
    "r": 57,
    "g": 51,
    "b": 183
  },
  "hsl": {
    "h": 242.727,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42403,
    "c": 0.19881,
    "h": 275.8
  },
  "luminance": 0.06656
}

Semantic roles & 50–950 ramp

primary
#3933B7
secondary
#C4C77F
accent
#E048D9
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0714
muted
#7D7A82

Preview Lab

Preview with #3933B7

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

Preview Lab → · Contrast checker → · Palette generator →

#3933B7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva