#4C78CC#4C78CC

#4C78CC is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.2% C 0.138 H 262.1°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#4C78CC
RGB	rgb(76, 120, 204)
HSL	hsl(219, 56%, 55%)
HSV	hsv(219, 63%, 80%)
CMYK	cmyk(62.7%, 41.2%, 0%, 20%)
CIE-LAB	lab(51.07, 11.22, -48.12)
CIE-LCH	lch(51.07, 49.41, 283.12°)
OKLab	oklab(58.18% -0.019 -0.137)
OKLCH	oklch(58.18% 0.138 262.1)
XYZ	xyz(20.5922, 19.3272, 59.7604)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C78CC #CCA04C

analogous

#4CB8CC #4C78CC #604CCC

triadic

#4C78CC #CC4C78 #78CC4C

tetradic

#4C78CC #CC4CB8 #CCA04C #4CCC60

square

#4C78CC #CC4CB8 #CCA04C #4CCC60

split-complementary

#4C78CC #CC604C #B8CC4C

monochromatic

#23417B #315AAA #4C78CC #7C9CDA #ABC0E7

Accessibility & contrast

On white

4.32

#4C78CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#4C78CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4C78CC

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C78CC	#FFFFFF	#000000	##000000
##4C78CC	1.00	4.32	4.87	4.87
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280CF

Deuteranopia (green-blind)

#4074CA

Tritanopia (blue-blind)

#008B98

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4c78cc;
/* rgb */ color: rgb(76, 120, 204);
/* oklch */ color: oklch(58.2% 0.138 262.1);

Tailwind

colors: {
  custom: {
    50: '#8a9edc',
    500: '#4c78cc',
    950: '#000000',
  },
}

SCSS

$custom: #4c78cc;
$custom-light: #8a9edc;
$custom-dark: #000000;

JSON

{
  "hex": "#4c78cc",
  "rgb": {
    "r": 76,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 219.375,
    "s": 55.652,
    "l": 54.902
  },
  "oklch": {
    "l": 0.58176,
    "c": 0.13833,
    "h": 262.1
  },
  "luminance": 0.19329
}

Semantic roles & 50–950 ramp

primary

#4C78CC

secondary

#D5C29F

accent

#AB49DF

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0D0E15

muted

#7D7E83

Preview Lab

Preview with #4C78CC

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

Preview Lab → · Contrast checker → · Palette generator →