#4B57CC#4B57CC

#4B57CC is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.5% C 0.179 H 273.8°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#4B57CC
RGB	rgb(75, 87, 204)
HSL	hsl(234, 56%, 55%)
HSV	hsv(234, 63%, 80%)
CMYK	cmyk(63.2%, 57.4%, 0%, 20%)
CIE-LAB	lab(42.26, 31.71, -62.28)
CIE-LCH	lch(42.26, 69.89, 296.98°)
OKLab	oklab(51.48% 0.012 -0.1791)
OKLCH	oklch(51.48% 0.18 273.8)
XYZ	xyz(17.2053, 12.6704, 58.6540)
Luminance	0.1267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B57CC #CCC04B

analogous

#4B97CC #4B57CC #804BCC

triadic

#4B57CC #CC4B57 #57CC4B

tetradic

#4B57CC #CC4B97 #CCC04B #4BCC80

square

#4B57CC #CC4B97 #CCC04B #4BCC80

split-complementary

#4B57CC #CC804B #97CC4B

monochromatic

#232B7A #303BAA #4B57CC #7B84DA #AAB0E7

Accessibility & contrast

On white

5.94

#4B57CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#4B57CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B57CC

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B57CC	#FFFFFF	#000000	##FFFFFF
##4B57CC	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD0

Deuteranopia (green-blind)

#005ECA

Tritanopia (blue-blind)

#007389

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4b57cc;
/* rgb */ color: rgb(75, 87, 204);
/* oklch */ color: oklch(51.5% 0.179 273.8);

Tailwind

colors: {
  custom: {
    50: '#8b86dc',
    500: '#4b57cc',
    950: '#000000',
  },
}

SCSS

$custom: #4b57cc;
$custom-light: #8b86dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4b57cc",
  "rgb": {
    "r": 75,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 234.419,
    "s": 55.844,
    "l": 54.706
  },
  "oklch": {
    "l": 0.51475,
    "c": 0.1795,
    "h": 273.8
  },
  "luminance": 0.12672
}

Semantic roles & 50–950 ramp

primary

#4B57CC

secondary

#D5D09E

accent

#D149DF

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4B57CC

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

Preview Lab → · Contrast checker → · Palette generator →