#3975D3#3975D3

#3975D3 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.1% C 0.158 H 259.2°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX#3975D3
RGBrgb(57, 117, 211)
HSLhsl(217, 64%, 53%)
HSVhsv(217, 73%, 83%)
CMYKcmyk(73%, 44.5%, 0%, 17.3%)
CIE-LABlab(49.85, 12.57, -54.09)
CIE-LCHlch(49.85, 55.53, 283.09°)
OKLaboklab(57.15% -0.0297 -0.1549)
OKLCHoklch(57.15% 0.158 259.2)
XYZxyz(19.8022, 18.2934, 64.1027)
Luminance0.1830 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3975D3 #D39739
analogous
#39C2D3 #3975D3 #4A39D3
triadic
#3975D3 #D33975 #75D339
tetradic
#3975D3 #D339C2 #D39739 #39D34A
square
#3975D3 #D339C2 #D39739 #39D34A
split-complementary
#3975D3 #D34A39 #C2D339
monochromatic
#1A3F77 #2659A9 #3975D3 #6B98DE #9DBBE9

Accessibility & contrast

On white

4.51
#3975D3 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.66
#3975D3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3975D3
4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3975D3#FFFFFF#000000##000000
##3975D31.004.514.664.66
#FFFFFF4.511.0021.0021.00
#0000004.6621.001.001.00
##0000004.6621.001.001.00

Color blindness preview

Protanopia (red-blind)
#457ED7
Deuteranopia (green-blind)
#2670D1
Tritanopia (blue-blind)
#008B9A
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3975d3;
/* rgb */ color: rgb(57, 117, 211);
/* oklch */ color: oklch(57.1% 0.158 259.2);
Tailwind
colors: {
  custom: {
    50: '#839ce1',
    500: '#3975d3',
    950: '#000000',
  },
}
SCSS
$custom: #3975d3;
$custom-light: #839ce1;
$custom-dark: #000000;
JSON
{
  "hex": "#3975d3",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 211
  },
  "hsl": {
    "h": 216.623,
    "s": 63.636,
    "l": 52.549
  },
  "oklch": {
    "l": 0.5715,
    "c": 0.15774,
    "h": 259.2
  },
  "luminance": 0.18296
}

Semantic roles & 50–950 ramp

primary
#3975D3
secondary
#D5BB92
accent
#A641E7
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3975D3

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

Preview Lab → · Contrast checker → · Palette generator →

#3975D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva