#3B73CC#3B73CC

#3B73CC is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.3% C 0.150 H 259.3°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX#3B73CC
RGBrgb(59, 115, 204)
HSLhsl(217, 59%, 52%)
HSVhsv(217, 71%, 80%)
CMYKcmyk(71.1%, 43.6%, 0%, 20%)
CIE-LABlab(48.94, 11.54, -51.55)
CIE-LCHlch(48.94, 52.82, 282.62°)
OKLaboklab(56.34% -0.0278 -0.1474)
OKLCHoklch(56.34% 0.15 259.3)
XYZxyz(18.8295, 17.5489, 59.5100)
Luminance0.1755 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3B73CC #CC943B
analogous
#3BBBCC #3B73CC #4C3BCC
triadic
#3B73CC #CC3B73 #73CC3B
tetradic
#3B73CC #CC3BBB #CC943B #3BCC4C
square
#3B73CC #CC3BBB #CC943B #3BCC4C
split-complementary
#3B73CC #CC4C3B #BBCC3B
monochromatic
#1D3D70 #2A57A0 #3B73CC #6C96D9 #9CB8E5

Accessibility & contrast

On white

4.66
#3B73CC on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.51
#3B73CC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3B73CC
4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3B73CC#FFFFFF#000000##FFFFFF
##3B73CC1.004.664.514.66
#FFFFFF4.661.0021.001.00
#0000004.5121.001.0021.00
##FFFFFF4.661.0021.001.00

Color blindness preview

Protanopia (red-blind)
#477BCF
Deuteranopia (green-blind)
#2D6ECA
Tritanopia (blue-blind)
#008895
Achromatopsia (no color)
#747474

Design tokens & code

CSS
--color: #3b73cc;
/* rgb */ color: rgb(59, 115, 204);
/* oklch */ color: oklch(56.3% 0.150 259.3);
Tailwind
colors: {
  custom: {
    50: '#829adc',
    500: '#3b73cc',
    950: '#000000',
  },
}
SCSS
$custom: #3b73cc;
$custom-light: #829adc;
$custom-dark: #000000;
JSON
{
  "hex": "#3b73cc",
  "rgb": {
    "r": 59,
    "g": 115,
    "b": 204
  },
  "hsl": {
    "h": 216.828,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56336,
    "c": 0.15004,
    "h": 259.3
  },
  "luminance": 0.17551
}

Semantic roles & 50–950 ramp

primary
#3B73CC
secondary
#D1B992
accent
#A646E2
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3B73CC

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

Preview Lab → · Contrast checker → · Palette generator →

#3B73CC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva