#4573BC#4573BC

#4573BC is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.8% C 0.125 H 259.3°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4573BC
RGB	rgb(69, 115, 188)
HSL	hsl(217, 47%, 50%)
HSV	hsv(217, 63%, 74%)
CMYK	cmyk(63.3%, 38.8%, 0%, 26.3%)
CIE-LAB	lab(48.46, 7.48, -43.12)
CIE-LCH	lch(48.46, 43.76, 279.84°)
OKLab	oklab(55.78% -0.0232 -0.1225)
OKLCH	oklch(55.78% 0.125 259.3)
XYZ	xyz(17.6589, 17.1559, 49.9480)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4573BC #BC8E45

analogous

#45AEBC #4573BC #5245BC

triadic

#4573BC #BC4573 #73BC45

tetradic

#4573BC #BC45AE #BC8E45 #45BC52

square

#4573BC #BC45AE #BC8E45 #45BC52

split-complementary

#4573BC #BC5245 #AEBC45

monochromatic

#243C63 #345790 #4573BC #7295CC #9FB7DC

Accessibility & contrast

On white

4.74

#4573BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#4573BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4573BC

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4573BC	#FFFFFF	#000000	##FFFFFF
##4573BC	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5379BF

Deuteranopia (green-blind)

#426EBA

Tritanopia (blue-blind)

#00848E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4573bc;
/* rgb */ color: rgb(69, 115, 188);
/* oklch */ color: oklch(55.8% 0.125 259.3);

Tailwind

colors: {
  custom: {
    50: '#849ad0',
    500: '#4573bc',
    950: '#000000',
  },
}

SCSS

$custom: #4573bc;
$custom-light: #849ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4573bc",
  "rgb": {
    "r": 69,
    "g": 115,
    "b": 188
  },
  "hsl": {
    "h": 216.807,
    "s": 47.036,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55779,
    "c": 0.12473,
    "h": 259.3
  },
  "luminance": 0.17158
}

Semantic roles & 50–950 ramp

primary

#4573BC

secondary

#C9B494

accent

#A351D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4573BC

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

Preview Lab → · Contrast checker → · Palette generator →