#4B78E9#4B78E9

#4B78E9 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 60.0% C 0.178 H 265.1°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#4B78E9
RGB	rgb(75, 120, 233)
HSL	hsl(223, 78%, 60%)
HSV	hsv(223, 68%, 91%)
CMYK	cmyk(67.8%, 48.5%, 0%, 8.6%)
CIE-LAB	lab(52.74, 21.14, -61.81)
CIE-LCH	lch(52.74, 65.32, 288.88°)
OKLab	oklab(60% -0.0151 -0.1773)
OKLCH	oklch(60% 0.178 265.1)
XYZ	xyz(24.3210, 20.8096, 79.8099)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B78E9 #E9BC4B

analogous

#4BC7E9 #4B78E9 #6D4BE9

triadic

#4B78E9 #E94B78 #78E94B

tetradic

#4B78E9 #E94BC7 #E9BC4B #4BE96D

square

#4B78E9 #E94BC7 #E9BC4B #4BE96D

split-complementary

#4B78E9 #E96D4B #C7E94B

monochromatic

#143EA5 #1B52DC #4B78E9 #82A1F0 #B8CAF6

Accessibility & contrast

On white

4.07

#4B78E9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#4B78E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B78E9

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B78E9	#FFFFFF	#000000	##000000
##4B78E9	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3986ED

Deuteranopia (green-blind)

#0677E7

Tritanopia (blue-blind)

#0092A5

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4b78e9;
/* rgb */ color: rgb(75, 120, 233);
/* oklch */ color: oklch(60.0% 0.178 265.1);

Tailwind

colors: {
  custom: {
    50: '#8e9ef1',
    500: '#4b78e9',
    950: '#000000',
  },
}

SCSS

$custom: #4b78e9;
$custom-light: #8e9ef1;
$custom-dark: #000000;

JSON

{
  "hex": "#4b78e9",
  "rgb": {
    "r": 75,
    "g": 120,
    "b": 233
  },
  "hsl": {
    "h": 222.911,
    "s": 78.218,
    "l": 60.392
  },
  "oklch": {
    "l": 0.60002,
    "c": 0.17792,
    "h": 265.1
  },
  "luminance": 0.20812
}

Semantic roles & 50–950 ramp

primary

#4B78E9

secondary

#E6D5AA

accent

#9F0BDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #4B78E9

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

Preview Lab → · Contrast checker → · Palette generator →