#3937E0#3937E0

#3937E0 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 47.1% C 0.244 H 272.5°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX#3937E0
RGBrgb(57, 55, 224)
HSLhsl(241, 73%, 55%)
HSVhsv(241, 75%, 88%)
CMYKcmyk(74.6%, 75.4%, 0%, 12.2%)
CIE-LABlab(35.95, 55.02, -84.16)
CIE-LCHlch(35.95, 100.55, 303.17°)
OKLaboklab(47.15% 0.0104 -0.2436)
OKLCHoklch(47.15% 0.244 272.5)
XYZxyz(16.5036, 8.9823, 71.3705)
Luminance0.0898 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3937E0 #DEE037
analogous
#378AE0 #3937E0 #8E37E0
triadic
#3937E0 #E03937 #37E039
tetradic
#3937E0 #E0378A #DEE037 #37E08E
square
#3937E0 #E0378A #DEE037 #37E08E
split-complementary
#3937E0 #E08E37 #8AE037
monochromatic
#161588 #1F1DBD #3937E0 #6D6CE8 #A2A1F0

Accessibility & contrast

On white

7.51
#3937E0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.80
#3937E0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937E0
7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3937E0#FFFFFF#000000##FFFFFF
##3937E01.007.512.807.51
#FFFFFF7.511.0021.001.00
#0000002.8021.001.0021.00
##FFFFFF7.511.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005DE5
Deuteranopia (green-blind)
#004CDD
Tritanopia (blue-blind)
#00698A
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #3937e0;
/* rgb */ color: rgb(57, 55, 224);
/* oklch */ color: oklch(47.1% 0.244 272.5);
Tailwind
colors: {
  custom: {
    50: '#8a71eb',
    500: '#3937e0',
    950: '#000000',
  },
}
SCSS
$custom: #3937e0;
$custom-light: #8a71eb;
$custom-dark: #000000;
JSON
{
  "hex": "#3937e0",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 224
  },
  "hsl": {
    "h": 240.71,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.47146,
    "c": 0.24381,
    "h": 272.5
  },
  "luminance": 0.08984
}

Semantic roles & 50–950 ramp

primary
#3937E0
secondary
#DCDD96
accent
#F038EE
background
#F9F6FE
surface
#F2ECFD
border
#CCC7D5
text
#0E0816
muted
#7E7B84

Preview Lab

Preview with #3937E0

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

Preview Lab → · Contrast checker → · Palette generator →

#3937E0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva