#4B78BF#4B78BF

#4B78BF is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.4% C 0.121 H 259.2°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4B78BF
RGB	rgb(75, 120, 191)
HSL	hsl(217, 48%, 52%)
HSV	hsv(217, 61%, 75%)
CMYK	cmyk(60.7%, 37.2%, 0%, 25.1%)
CIE-LAB	lab(50.32, 6.58, -41.87)
CIE-LCH	lch(50.32, 42.38, 278.94°)
OKLab	oklab(57.36% -0.0227 -0.1187)
OKLCH	oklch(57.36% 0.121 259.2)
XYZ	xyz(19.0188, 18.6887, 51.8851)
Luminance	0.1869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B78BF #BF924B

analogous

#4BB2BF #4B78BF #584BBF

triadic

#4B78BF #BF4B78 #78BF4B

tetradic

#4B78BF #BF4BB2 #BF924B #4BBF58

square

#4B78BF #BF4BB2 #BF924B #4BBF58

split-complementary

#4B78BF #BF584B #B2BF4B

monochromatic

#26406A #365B97 #4B78BF #789ACF #A5BCDF

Accessibility & contrast

On white

4.43

#4B78BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#4B78BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B78BF

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B78BF	#FFFFFF	#000000	##000000
##4B78BF	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7EC2

Deuteranopia (green-blind)

#4A73BE

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4b78bf;
/* rgb */ color: rgb(75, 120, 191);
/* oklch */ color: oklch(57.4% 0.121 259.2);

Tailwind

colors: {
  custom: {
    50: '#879ed2',
    500: '#4b78bf',
    950: '#000000',
  },
}

SCSS

$custom: #4b78bf;
$custom-light: #879ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#4b78bf",
  "rgb": {
    "r": 75,
    "g": 120,
    "b": 191
  },
  "hsl": {
    "h": 216.724,
    "s": 47.541,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57357,
    "c": 0.12089,
    "h": 259.2
  },
  "luminance": 0.1869
}

Semantic roles & 50–950 ramp

primary

#4B78BF

secondary

#CCB99A

accent

#A351D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4B78BF

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

Preview Lab → · Contrast checker → · Palette generator →