#4F78CC#4F78CC

#4F78CC is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.3% C 0.137 H 263.2°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX#4F78CC
RGBrgb(79, 120, 204)
HSLhsl(220, 55%, 55%)
HSVhsv(220, 61%, 80%)
CMYKcmyk(61.3%, 41.2%, 0%, 20%)
CIE-LABlab(51.21, 11.77, -47.88)
CIE-LCHlch(51.21, 49.30, 283.81°)
OKLaboklab(58.33% -0.0163 -0.1363)
OKLCHoklch(58.33% 0.137 263.2)
XYZxyz(20.8362, 19.4530, 59.7718)
Luminance0.1946 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4F78CC #CCA34F
analogous
#4FB6CC #4F78CC #644FCC
triadic
#4F78CC #CC4F78 #78CC4F
tetradic
#4F78CC #CC4FB6 #CCA34F #4FCC64
square
#4F78CC #CC4FB6 #CCA34F #4FCC64
split-complementary
#4F78CC #CC644F #B6CC4F
monochromatic
#24417D #325AAC #4F78CC #7E9CDA #AEC1E7

Accessibility & contrast

On white

4.29
#4F78CC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.89
#4F78CC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F78CC
4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4F78CC#FFFFFF#000000##000000
##4F78CC1.004.294.894.89
#FFFFFF4.291.0021.0021.00
#0000004.8921.001.001.00
##0000004.8921.001.001.00

Color blindness preview

Protanopia (red-blind)
#5380CF
Deuteranopia (green-blind)
#4175CA
Tritanopia (blue-blind)
#008B98
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #4f78cc;
/* rgb */ color: rgb(79, 120, 204);
/* oklch */ color: oklch(58.3% 0.137 263.2);
Tailwind
colors: {
  custom: {
    50: '#8b9edc',
    500: '#4f78cc',
    950: '#000000',
  },
}
SCSS
$custom: #4f78cc;
$custom-light: #8b9edc;
$custom-dark: #000000;
JSON
{
  "hex": "#4f78cc",
  "rgb": {
    "r": 79,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 220.32,
    "s": 55.066,
    "l": 55.49
  },
  "oklch": {
    "l": 0.58328,
    "c": 0.13723,
    "h": 263.2
  },
  "luminance": 0.19455
}

Semantic roles & 50–950 ramp

primary
#4F78CC
secondary
#D5C4A1
accent
#AE49DE
background
#F9F9FD
surface
#F1F2FB
border
#CBCCD4
text
#0D0E15
muted
#7E7E83

Preview Lab

Preview with #4F78CC

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

Preview Lab → · Contrast checker → · Palette generator →

#4F78CC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva