#4573BF#4573BF

#4573BF is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.0% C 0.129 H 259.9°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#4573BF
RGB	rgb(69, 115, 191)
HSL	hsl(217, 49%, 51%)
HSV	hsv(217, 64%, 75%)
CMYK	cmyk(63.9%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(48.62, 8.52, -44.59)
CIE-LCH	lch(48.62, 45.39, 280.82°)
OKLab	oklab(55.96% -0.0225 -0.1268)
OKLCH	oklch(55.96% 0.129 259.9)
XYZ	xyz(17.9856, 17.2866, 51.6689)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4573BF #BF9145

analogous

#45B0BF #4573BF #5445BF

triadic

#4573BF #BF4573 #73BF45

tetradic

#4573BF #BF45B0 #BF9145 #45BF54

square

#4573BF #BF45B0 #BF9145 #45BF54

split-complementary

#4573BF #BF5445 #B0BF45

monochromatic

#233D66 #335794 #4573BF #7395CF #A0B8DE

Accessibility & contrast

On white

4.71

#4573BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#4573BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4573BF

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4573BF	#FFFFFF	#000000	##FFFFFF
##4573BF	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#517AC2

Deuteranopia (green-blind)

#406EBD

Tritanopia (blue-blind)

#008490

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4573bf;
/* rgb */ color: rgb(69, 115, 191);
/* oklch */ color: oklch(56.0% 0.129 259.9);

Tailwind

colors: {
  custom: {
    50: '#849ad3',
    500: '#4573bf',
    950: '#000000',
  },
}

SCSS

$custom: #4573bf;
$custom-light: #849ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#4573bf",
  "rgb": {
    "r": 69,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 217.377,
    "s": 48.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.55959,
    "c": 0.12884,
    "h": 259.9
  },
  "luminance": 0.17288
}

Semantic roles & 50–950 ramp

primary

#4573BF

secondary

#CBB795

accent

#A54FD8

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4573BF

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

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