#3B78CF#3B78CF

#3B78CF is a mid, vivid blue. Relative luminance 0.189; OKLCH L 57.6% C 0.148 H 257.7°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX#3B78CF
RGBrgb(59, 120, 207)
HSLhsl(215, 61%, 52%)
HSVhsv(215, 71%, 81%)
CMYKcmyk(71.5%, 42%, 0%, 18.8%)
CIE-LABlab(50.53, 9.53, -50.72)
CIE-LCHlch(50.53, 51.61, 280.64°)
OKLaboklab(57.62% -0.0317 -0.1449)
OKLCHoklch(57.62% 0.148 257.7)
XYZxyz(19.7785, 18.8656, 61.6184)
Luminance0.1887 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3B78CF #CF923B
analogous
#3BC2CF #3B78CF #483BCF
triadic
#3B78CF #CF3B78 #78CF3B
tetradic
#3B78CF #CF3BC2 #CF923B #3BCF48
square
#3B78CF #CF3BC2 #CF923B #3BCF48
split-complementary
#3B78CF #CF483B #C2CF3B
monochromatic
#1C4073 #285BA5 #3B78CF #6C9ADB #9DBCE7

Accessibility & contrast

On white

4.40
#3B78CF on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.77
#3B78CF on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78CF
4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3B78CF#FFFFFF#000000##000000
##3B78CF1.004.404.774.77
#FFFFFF4.401.0021.0021.00
#0000004.7721.001.001.00
##0000004.7721.001.001.00

Color blindness preview

Protanopia (red-blind)
#4E80D2
Deuteranopia (green-blind)
#3572CD
Tritanopia (blue-blind)
#008C99
Achromatopsia (no color)
#787878

Design tokens & code

CSS
--color: #3b78cf;
/* rgb */ color: rgb(59, 120, 207);
/* oklch */ color: oklch(57.6% 0.148 257.7);
Tailwind
colors: {
  custom: {
    50: '#839ede',
    500: '#3b78cf',
    950: '#000000',
  },
}
SCSS
$custom: #3b78cf;
$custom-light: #839ede;
$custom-dark: #000000;
JSON
{
  "hex": "#3b78cf",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 215.27,
    "s": 60.656,
    "l": 52.157
  },
  "oklch": {
    "l": 0.5762,
    "c": 0.14837,
    "h": 257.7
  },
  "luminance": 0.18868
}

Semantic roles & 50–950 ramp

primary
#3B78CF
secondary
#D3B993
accent
#A244E4
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3B78CF

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

Preview Lab → · Contrast checker → · Palette generator →

#3B78CF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva