#3979CF#3979CF

#3979CF is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.8% C 0.148 H 256.7°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX#3979CF
RGBrgb(57, 121, 207)
HSLhsl(214, 61%, 52%)
HSVhsv(214, 72%, 81%)
CMYKcmyk(72.5%, 41.5%, 0%, 18.8%)
CIE-LABlab(50.74, 8.63, -50.39)
CIE-LCHlch(50.74, 51.12, 279.72°)
OKLaboklab(57.77% -0.034 -0.144)
OKLCHoklch(57.77% 0.148 256.7)
XYZxyz(19.7831, 19.0474, 61.6533)
Luminance0.1905 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3979CF #CF8F39
analogous
#39C4CF #3979CF #4439CF
triadic
#3979CF #CF3979 #79CF39
tetradic
#3979CF #CF39C4 #CF8F39 #39CF44
square
#3979CF #CF39C4 #CF8F39 #39CF44
split-complementary
#3979CF #CF4439 #C4CF39
monochromatic
#1C4072 #285CA3 #3979CF #6A9ADB #9CBCE7

Accessibility & contrast

On white

4.37
#3979CF on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.81
#3979CF on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979CF
4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3979CF#FFFFFF#000000##000000
##3979CF1.004.374.814.81
#FFFFFF4.371.0021.0021.00
#0000004.8121.001.001.00
##0000004.8121.001.001.00

Color blindness preview

Protanopia (red-blind)
#5080D2
Deuteranopia (green-blind)
#3672CD
Tritanopia (blue-blind)
#008D9A
Achromatopsia (no color)
#797979

Design tokens & code

CSS
--color: #3979cf;
/* rgb */ color: rgb(57, 121, 207);
/* oklch */ color: oklch(57.8% 0.148 256.7);
Tailwind
colors: {
  custom: {
    50: '#829fde',
    500: '#3979cf',
    950: '#000000',
  },
}
SCSS
$custom: #3979cf;
$custom-light: #829fde;
$custom-dark: #000000;
JSON
{
  "hex": "#3979cf",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 207
  },
  "hsl": {
    "h": 214.4,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57765,
    "c": 0.14793,
    "h": 256.7
  },
  "luminance": 0.1905
}

Semantic roles & 50–950 ramp

primary
#3979CF
secondary
#D3B791
accent
#A044E4
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3979CF

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

Preview Lab → · Contrast checker → · Palette generator →

#3979CF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva