#4D78BB#4D78BB

#4D78BB is a mid, moderate blue. Relative luminance 0.186; OKLCH L 57.2% C 0.115 H 259.0°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4D78BB
RGB	rgb(77, 120, 187)
HSL	hsl(217, 45%, 52%)
HSV	hsv(217, 59%, 73%)
CMYK	cmyk(58.8%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(50.21, 5.63, -39.73)
CIE-LCH	lch(50.21, 40.13, 278.07°)
OKLab	oklab(57.23% -0.0219 -0.1125)
OKLCH	oklch(57.23% 0.115 259)
XYZ	xyz(18.7435, 18.5970, 49.6059)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D78BB #BB904D

analogous

#4DAFBB #4D78BB #594DBB

triadic

#4D78BB #BB4D78 #78BB4D

tetradic

#4D78BB #BB4DAF #BB904D #4DBB59

square

#4D78BB #BB4DAF #BB904D #4DBB59

split-complementary

#4D78BB #BB594D #AFBB4D

monochromatic

#274066 #385C93 #4D78BB #799ACC #A6BBDD

Accessibility & contrast

On white

4.45

#4D78BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#4D78BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4D78BB

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D78BB	#FFFFFF	#000000	##000000
##4D78BB	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)

#5C7DBE

Deuteranopia (green-blind)

#4E73BA

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4d78bb;
/* rgb */ color: rgb(77, 120, 187);
/* oklch */ color: oklch(57.2% 0.115 259.0);

Tailwind

colors: {
  custom: {
    50: '#879ed0',
    500: '#4d78bb',
    950: '#000000',
  },
}

SCSS

$custom: #4d78bb;
$custom-light: #879ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4d78bb",
  "rgb": {
    "r": 77,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 216.545,
    "s": 44.715,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57231,
    "c": 0.11459,
    "h": 259
  },
  "luminance": 0.18599
}

Semantic roles & 50–950 ramp

primary

#4D78BB

secondary

#CAB79A

accent

#A253D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4D78BB

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

Preview Lab → · Contrast checker → · Palette generator →