#3973D9#3973D9

#3973D9 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.1% C 0.168 H 260.8°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX#3973D9
RGBrgb(57, 115, 217)
HSLhsl(218, 68%, 54%)
HSVhsv(218, 74%, 85%)
CMYKcmyk(73.7%, 47%, 0%, 14.9%)
CIE-LABlab(49.66, 16.03, -57.79)
CIE-LCHlch(49.66, 59.97, 285.50°)
OKLaboklab(57.13% -0.027 -0.1658)
OKLCHoklch(57.13% 0.168 260.8)
XYZxyz(20.3379, 18.1388, 68.0615)
Luminance0.1814 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3973D9 #D99F39
analogous
#39C3D9 #3973D9 #4F39D9
triadic
#3973D9 #D93973 #73D939
tetradic
#3973D9 #D939C3 #D99F39 #39D94F
square
#3973D9 #D939C3 #D99F39 #39D94F
split-complementary
#3973D9 #D94F39 #C3D939
monochromatic
#183E7F #2257B3 #3973D9 #6C97E3 #A0BCED

Accessibility & contrast

On white

4.54
#3973D9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.63
#3973D9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3973D9
4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3973D9#FFFFFF#000000##000000
##3973D91.004.544.634.63
#FFFFFF4.541.0021.0021.00
#0000004.6321.001.001.00
##0000004.6321.001.001.00

Color blindness preview

Protanopia (red-blind)
#3C7EDD
Deuteranopia (green-blind)
#0E6FD7
Tritanopia (blue-blind)
#008B9B
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #3973d9;
/* rgb */ color: rgb(57, 115, 217);
/* oklch */ color: oklch(57.1% 0.168 260.8);
Tailwind
colors: {
  custom: {
    50: '#849ae5',
    500: '#3973d9',
    950: '#000000',
  },
}
SCSS
$custom: #3973d9;
$custom-light: #849ae5;
$custom-dark: #000000;
JSON
{
  "hex": "#3973d9",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 217
  },
  "hsl": {
    "h": 218.25,
    "s": 67.797,
    "l": 53.725
  },
  "oklch": {
    "l": 0.57126,
    "c": 0.16802,
    "h": 260.8
  },
  "luminance": 0.18141
}

Semantic roles & 50–950 ramp

primary
#3973D9
secondary
#D9C095
accent
#AC3DEB
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0E16
muted
#7D7E84

Preview Lab

Preview with #3973D9

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

Preview Lab → · Contrast checker → · Palette generator →

#3973D9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva