#4C78BC#4C78BC

#4C78BC is a mid, moderate blue. Relative luminance 0.186; OKLCH L 57.2% C 0.116 H 258.8°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4C78BC
RGB	rgb(76, 120, 188)
HSL	hsl(216, 46%, 52%)
HSV	hsv(216, 60%, 74%)
CMYK	cmyk(59.6%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(50.21, 5.77, -40.31)
CIE-LCH	lch(50.21, 40.72, 278.14°)
OKLab	oklab(57.24% -0.0226 -0.1142)
OKLCH	oklch(57.24% 0.116 258.8)
XYZ	xyz(18.7709, 18.5987, 50.1679)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C78BC #BC904C

analogous

#4CB0BC #4C78BC #584CBC

triadic

#4C78BC #BC4C78 #78BC4C

tetradic

#4C78BC #BC4CB0 #BC904C #4CBC58

square

#4C78BC #BC4CB0 #BC904C #4CBC58

split-complementary

#4C78BC #BC584C #B0BC4C

monochromatic

#274067 #375C94 #4C78BC #799ACD #A5BBDD

Accessibility & contrast

On white

4.45

#4C78BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#4C78BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4C78BC

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C78BC	#FFFFFF	#000000	##000000
##4C78BC	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DBF

Deuteranopia (green-blind)

#4D73BB

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4c78bc;
/* rgb */ color: rgb(76, 120, 188);
/* oklch */ color: oklch(57.2% 0.116 258.8);

Tailwind

colors: {
  custom: {
    50: '#879ed0',
    500: '#4c78bc',
    950: '#000000',
  },
}

SCSS

$custom: #4c78bc;
$custom-light: #879ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4c78bc",
  "rgb": {
    "r": 76,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 216.429,
    "s": 45.528,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57236,
    "c": 0.11638,
    "h": 258.8
  },
  "luminance": 0.186
}

Semantic roles & 50–950 ramp

primary

#4C78BC

secondary

#CAB799

accent

#A253D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4C78BC

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

Preview Lab → · Contrast checker → · Palette generator →