#4C57CC#4C57CC

#4C57CC is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.5% C 0.179 H 274.2°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#4C57CC
RGB	rgb(76, 87, 204)
HSL	hsl(235, 56%, 55%)
HSV	hsv(235, 63%, 80%)
CMYK	cmyk(62.7%, 57.4%, 0%, 20%)
CIE-LAB	lab(42.32, 31.87, -62.18)
CIE-LCH	lch(42.32, 69.87, 297.14°)
OKLab	oklab(51.54% 0.0131 -0.1788)
OKLCH	oklch(51.54% 0.179 274.2)
XYZ	xyz(17.2842, 12.7111, 58.6577)
Luminance	0.1271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C57CC #CCC14C

analogous

#4C97CC #4C57CC #814CCC

triadic

#4C57CC #CC4C57 #57CC4C

tetradic

#4C57CC #CC4C97 #CCC14C #4CCC81

square

#4C57CC #CC4C97 #CCC14C #4CCC81

split-complementary

#4C57CC #CC814C #97CC4C

monochromatic

#232A7B #313BAA #4C57CC #7C84DA #ABB0E7

Accessibility & contrast

On white

5.93

#4C57CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#4C57CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4C57CC

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C57CC	#FFFFFF	#000000	##FFFFFF
##4C57CC	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	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: #4c57cc;
/* rgb */ color: rgb(76, 87, 204);
/* oklch */ color: oklch(51.5% 0.179 274.2);

Tailwind

colors: {
  custom: {
    50: '#8b86dc',
    500: '#4c57cc',
    950: '#000000',
  },
}

SCSS

$custom: #4c57cc;
$custom-light: #8b86dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4c57cc",
  "rgb": {
    "r": 76,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 234.844,
    "s": 55.652,
    "l": 54.902
  },
  "oklch": {
    "l": 0.51537,
    "c": 0.17925,
    "h": 274.2
  },
  "luminance": 0.12713
}

Semantic roles & 50–950 ramp

primary

#4C57CC

secondary

#D5D09F

accent

#D249DF

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4C57CC

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

Preview Lab → · Contrast checker → · Palette generator →