#3B78DB#3B78DB

#3B78DB is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.4% C 0.164 H 259.7°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX#3B78DB
RGBrgb(59, 120, 219)
HSLhsl(217, 69%, 55%)
HSVhsv(217, 73%, 86%)
CMYKcmyk(73.1%, 45.2%, 0%, 14.1%)
CIE-LABlab(51.24, 13.89, -56.39)
CIE-LCHlch(51.24, 58.08, 283.84°)
OKLaboklab(58.4% -0.0295 -0.1616)
OKLCHoklch(58.4% 0.164 259.7)
XYZxyz(21.3017, 19.4749, 69.6405)
Luminance0.1948 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3B78DB #DB9E3B
analogous
#3BC8DB #3B78DB #4E3BDB
triadic
#3B78DB #DB3B78 #78DB3B
tetradic
#3B78DB #DB3BC8 #DB9E3B #3BDB4E
square
#3B78DB #DB3BC8 #DB9E3B #3BDB4E
split-complementary
#3B78DB #DB4E3B #C8DB3B
monochromatic
#184183 #225BB7 #3B78DB #6F9CE4 #A2BFEE

Accessibility & contrast

On white

4.29
#3B78DB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.90
#3B78DB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78DB
4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3B78DB#FFFFFF#000000##000000
##3B78DB1.004.294.904.90
#FFFFFF4.291.0021.0021.00
#0000004.9021.001.001.00
##0000004.9021.001.001.00

Color blindness preview

Protanopia (red-blind)
#4582DF
Deuteranopia (green-blind)
#2273D9
Tritanopia (blue-blind)
#008F9F
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3b78db;
/* rgb */ color: rgb(59, 120, 219);
/* oklch */ color: oklch(58.4% 0.164 259.7);
Tailwind
colors: {
  custom: {
    50: '#859ee7',
    500: '#3b78db',
    950: '#000000',
  },
}
SCSS
$custom: #3b78db;
$custom-light: #859ee7;
$custom-dark: #000000;
JSON
{
  "hex": "#3b78db",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 219
  },
  "hsl": {
    "h": 217.125,
    "s": 68.966,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58396,
    "c": 0.16427,
    "h": 259.7
  },
  "luminance": 0.19477
}

Semantic roles & 50–950 ramp

primary
#3B78DB
secondary
#DBC197
accent
#A93CEC
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0E16
muted
#7D7E84

Preview Lab

Preview with #3B78DB

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

Preview Lab → · Contrast checker → · Palette generator →

#3B78DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva