#4573DA#4573DA

#4573DA is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.7% C 0.166 H 263.9°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4573DA
RGB	rgb(69, 115, 218)
HSL	hsl(221, 67%, 56%)
HSV	hsv(221, 68%, 85%)
CMYK	cmyk(68.3%, 47.2%, 0%, 14.5%)
CIE-LAB	lab(50.20, 18.05, -57.47)
CIE-LCH	lch(50.20, 60.24, 287.44°)
OKLab	oklab(57.69% -0.0177 -0.1647)
OKLCH	oklch(57.69% 0.166 263.9)
XYZ	xyz(21.2354, 18.5865, 68.7845)
Luminance	0.1859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4573DA #DAAC45

analogous

#45BDDA #4573DA #6245DA

triadic

#4573DA #DA4573 #73DA45

tetradic

#4573DA #DA45BD #DAAC45 #45DA62

square

#4573DA #DA45BD #DAAC45 #45DA62

split-complementary

#4573DA #DA6245 #BDDA45

monochromatic

#1B3D89 #2554BC #4573DA #7899E4 #ABC0EE

Accessibility & contrast

On white

4.45

#4573DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#4573DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4573DA

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4573DA	#FFFFFF	#000000	##000000
##4573DA	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C7FDE

Deuteranopia (green-blind)

#1971D8

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4573da;
/* rgb */ color: rgb(69, 115, 218);
/* oklch */ color: oklch(57.7% 0.166 263.9);

Tailwind

colors: {
  custom: {
    50: '#899ae6',
    500: '#4573da',
    950: '#000000',
  },
}

SCSS

$custom: #4573da;
$custom-light: #899ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#4573da",
  "rgb": {
    "r": 69,
    "g": 115,
    "b": 218
  },
  "hsl": {
    "h": 221.477,
    "s": 66.816,
    "l": 56.275
  },
  "oklch": {
    "l": 0.57688,
    "c": 0.16565,
    "h": 263.9
  },
  "luminance": 0.18589
}

Semantic roles & 50–950 ramp

primary

#4573DA

secondary

#DCC99F

accent

#B53EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4573DA

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

Preview Lab → · Contrast checker → · Palette generator →