#4F78DD#4F78DD

#4F78DD is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.4% C 0.161 H 265.2°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#4F78DD
RGB	rgb(79, 120, 221)
HSL	hsl(223, 68%, 59%)
HSV	hsv(223, 64%, 87%)
CMYK	cmyk(64.3%, 45.7%, 0%, 13.3%)
CIE-LAB	lab(52.19, 17.60, -55.95)
CIE-LCH	lch(52.19, 58.65, 287.46°)
OKLab	oklab(59.4% -0.0133 -0.16)
OKLCH	oklch(59.4% 0.161 265.2)
XYZ	xyz(22.9875, 20.3135, 71.1021)
Luminance	0.2032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F78DD #DDB44F

analogous

#4FBFDD #4F78DD #6D4FDD

triadic

#4F78DD #DD4F78 #78DD4F

tetradic

#4F78DD #DD4FBF #DDB44F #4FDD6D

square

#4F78DD #DD4FBF #DDB44F #4FDD6D

split-complementary

#4F78DD #DD6D4F #BFDD4F

monochromatic

#1D3F95 #2755C8 #4F78DD #829FE7 #B6C7F1

Accessibility & contrast

On white

4.15

#4F78DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#4F78DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F78DD

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F78DD	#FFFFFF	#000000	##000000
##4F78DD	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4683E1

Deuteranopia (green-blind)

#2C76DB

Tritanopia (blue-blind)

#008FA0

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4f78dd;
/* rgb */ color: rgb(79, 120, 221);
/* oklch */ color: oklch(59.4% 0.161 265.2);

Tailwind

colors: {
  custom: {
    50: '#8e9ee8',
    500: '#4f78dd',
    950: '#000000',
  },
}

SCSS

$custom: #4f78dd;
$custom-light: #8e9ee8;
$custom-dark: #000000;

JSON

{
  "hex": "#4f78dd",
  "rgb": {
    "r": 79,
    "g": 120,
    "b": 221
  },
  "hsl": {
    "h": 222.676,
    "s": 67.619,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59395,
    "c": 0.16051,
    "h": 265.2
  },
  "luminance": 0.20316
}

Semantic roles & 50–950 ramp

primary

#4F78DD

secondary

#E0D0A8

accent

#B83DEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4F78DD

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

Preview Lab → · Contrast checker → · Palette generator →