#3970D7#3970D7

#3970D7 is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.4% C 0.169 H 261.6°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX#3970D7
RGBrgb(57, 112, 215)
HSLhsl(219, 66%, 53%)
HSVhsv(219, 73%, 84%)
CMYKcmyk(73.5%, 47.9%, 0%, 15.7%)
CIE-LABlab(48.71, 17.18, -58.19)
CIE-LCHlch(48.71, 60.67, 286.45°)
OKLaboklab(56.36% -0.0248 -0.1671)
OKLCHoklch(56.36% 0.169 261.6)
XYZxyz(19.7429, 17.3623, 66.5876)
Luminance0.1736 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3970D7 #D7A039
analogous
#39BFD7 #3970D7 #5139D7
triadic
#3970D7 #D73970 #70D739
tetradic
#3970D7 #D739BF #D7A039 #39D751
square
#3970D7 #D739BF #D7A039 #39D751
split-complementary
#3970D7 #D75139 #BFD739
monochromatic
#193C7C #2354AF #3970D7 #6C95E1 #9FBAEC

Accessibility & contrast

On white

4.70
#3970D7 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.47
#3970D7 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970D7
4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3970D7#FFFFFF#000000##FFFFFF
##3970D71.004.704.474.70
#FFFFFF4.701.0021.001.00
#0000004.4721.001.0021.00
##FFFFFF4.701.0021.001.00

Color blindness preview

Protanopia (red-blind)
#377BDB
Deuteranopia (green-blind)
#006DD5
Tritanopia (blue-blind)
#008899
Achromatopsia (no color)
#747474

Design tokens & code

CSS
--color: #3970d7;
/* rgb */ color: rgb(57, 112, 215);
/* oklch */ color: oklch(56.4% 0.169 261.6);
Tailwind
colors: {
  custom: {
    50: '#8498e4',
    500: '#3970d7',
    950: '#000000',
  },
}
SCSS
$custom: #3970d7;
$custom-light: #8498e4;
$custom-dark: #000000;
JSON
{
  "hex": "#3970d7",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 215
  },
  "hsl": {
    "h": 219.114,
    "s": 66.387,
    "l": 53.333
  },
  "oklch": {
    "l": 0.56356,
    "c": 0.16889,
    "h": 261.6
  },
  "luminance": 0.17364
}

Semantic roles & 50–950 ramp

primary
#3970D7
secondary
#D8C094
accent
#AE3EE9
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0D16
muted
#7D7E84

Preview Lab

Preview with #3970D7

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

Preview Lab → · Contrast checker → · Palette generator →

#3970D7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva