#4B73DB#4B73DB

#4B73DB is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.0% C 0.165 H 265.7°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#4B73DB
RGB	rgb(75, 115, 219)
HSL	hsl(223, 67%, 58%)
HSV	hsv(223, 66%, 86%)
CMYK	cmyk(65.8%, 47.5%, 0%, 14.1%)
CIE-LAB	lab(50.53, 19.34, -57.48)
CIE-LCH	lch(50.53, 60.65, 288.60°)
OKLab	oklab(58.04% -0.0124 -0.1646)
OKLCH	oklch(58.04% 0.165 265.7)
XYZ	xyz(21.8141, 18.8697, 69.4967)
Luminance	0.1887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B73DB #DBB34B

analogous

#4BBBDB #4B73DB #6B4BDB

triadic

#4B73DB #DB4B73 #73DB4B

tetradic

#4B73DB #DB4BBB #DBB34B #4BDB6B

square

#4B73DB #DB4BBB #DBB34B #4BDB6B

split-complementary

#4B73DB #DB6B4B #BBDB4B

monochromatic

#1D3C8F #2752C2 #4B73DB #7E9BE5 #B1C2EF

Accessibility & contrast

On white

4.40

#4B73DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#4B73DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B73DB

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B73DB	#FFFFFF	#000000	##000000
##4B73DB	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7FDF

Deuteranopia (green-blind)

#1C72D9

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4b73db;
/* rgb */ color: rgb(75, 115, 219);
/* oklch */ color: oklch(58.0% 0.165 265.7);

Tailwind

colors: {
  custom: {
    50: '#8c9ae7',
    500: '#4b73db',
    950: '#000000',
  },
}

SCSS

$custom: #4b73db;
$custom-light: #8c9ae7;
$custom-dark: #000000;

JSON

{
  "hex": "#4b73db",
  "rgb": {
    "r": 75,
    "g": 115,
    "b": 219
  },
  "hsl": {
    "h": 223.333,
    "s": 66.667,
    "l": 57.647
  },
  "oklch": {
    "l": 0.58038,
    "c": 0.1651,
    "h": 265.7
  },
  "luminance": 0.18872
}

Semantic roles & 50–950 ramp

primary

#4B73DB

secondary

#DECEA4

accent

#BA3EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4B73DB

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

Preview Lab → · Contrast checker → · Palette generator →