#4573B8#4573B8

#4573B8 is a mid, moderate blue. Relative luminance 0.170; OKLCH L 55.5% C 0.119 H 258.3°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#4573B8
RGB	rgb(69, 115, 184)
HSL	hsl(216, 45%, 50%)
HSV	hsv(216, 63%, 72%)
CMYK	cmyk(62.5%, 37.5%, 0%, 27.8%)
CIE-LAB	lab(48.24, 6.09, -41.14)
CIE-LCH	lch(48.24, 41.59, 278.42°)
OKLab	oklab(55.54% -0.0242 -0.1168)
OKLCH	oklch(55.54% 0.119 258.3)
XYZ	xyz(17.2336, 16.9858, 47.7085)
Luminance	0.1699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4573B8 #B88A45

analogous

#45ADB8 #4573B8 #5045B8

triadic

#4573B8 #B84573 #73B845

tetradic

#4573B8 #B845AD #B88A45 #45B850

square

#4573B8 #B845AD #B88A45 #45B850

split-complementary

#4573B8 #B85045 #ADB845

monochromatic

#243B5F #34578B #4573B8 #7194CA #9DB6DA

Accessibility & contrast

On white

4.78

#4573B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#4573B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4573B8

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4573B8	#FFFFFF	#000000	##FFFFFF
##4573B8	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5578BB

Deuteranopia (green-blind)

#456EB7

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4573b8;
/* rgb */ color: rgb(69, 115, 184);
/* oklch */ color: oklch(55.5% 0.119 258.3);

Tailwind

colors: {
  custom: {
    50: '#839acd',
    500: '#4573b8',
    950: '#000000',
  },
}

SCSS

$custom: #4573b8;
$custom-light: #839acd;
$custom-dark: #000000;

JSON

{
  "hex": "#4573b8",
  "rgb": {
    "r": 69,
    "g": 115,
    "b": 184
  },
  "hsl": {
    "h": 216,
    "s": 45.455,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55544,
    "c": 0.11925,
    "h": 258.3
  },
  "luminance": 0.16987
}

Semantic roles & 50–950 ramp

primary

#4573B8

secondary

#C7B292

accent

#A153D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #4573B8

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

Preview Lab → · Contrast checker → · Palette generator →