#4F78DB#4F78DB

#4F78DB is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.3% C 0.158 H 265.0°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#4F78DB
RGB	rgb(79, 120, 219)
HSL	hsl(222, 66%, 58%)
HSV	hsv(222, 64%, 86%)
CMYK	cmyk(63.9%, 45.2%, 0%, 14.1%)
CIE-LAB	lab(52.07, 16.91, -55.01)
CIE-LCH	lch(52.07, 57.55, 287.09°)
OKLab	oklab(59.27% -0.0136 -0.1572)
OKLCH	oklch(59.27% 0.158 265)
XYZ	xyz(22.7227, 20.2076, 69.7071)
Luminance	0.2021 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F78DB #DBB24F

analogous

#4FBEDB #4F78DB #6C4FDB

triadic

#4F78DB #DB4F78 #78DB4F

tetradic

#4F78DB #DB4FBE #DBB24F #4FDB6C

square

#4F78DB #DB4FBE #DBB24F #4FDB6C

split-complementary

#4F78DB #DB6C4F #BEDB4F

monochromatic

#1E4092 #2856C5 #4F78DB #829FE5 #B5C6F0

Accessibility & contrast

On white

4.17

#4F78DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#4F78DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F78DB

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F78DB	#FFFFFF	#000000	##000000
##4F78DB	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4883DF

Deuteranopia (green-blind)

#2F76D9

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4f78db;
/* rgb */ color: rgb(79, 120, 219);
/* oklch */ color: oklch(59.3% 0.158 265.0);

Tailwind

colors: {
  custom: {
    50: '#8d9ee7',
    500: '#4f78db',
    950: '#000000',
  },
}

SCSS

$custom: #4f78db;
$custom-light: #8d9ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#4f78db",
  "rgb": {
    "r": 79,
    "g": 120,
    "b": 219
  },
  "hsl": {
    "h": 222.429,
    "s": 66.038,
    "l": 58.431
  },
  "oklch": {
    "l": 0.59266,
    "c": 0.15779,
    "h": 265
  },
  "luminance": 0.2021
}

Semantic roles & 50–950 ramp

primary

#4F78DB

secondary

#DFCEA7

accent

#B73FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4F78DB

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

Preview Lab → · Contrast checker → · Palette generator →