#4B57CE#4B57CE

#4B57CE is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.6% C 0.182 H 273.8°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#4B57CE
RGB	rgb(75, 87, 206)
HSL	hsl(235, 57%, 55%)
HSV	hsv(235, 64%, 81%)
CMYK	cmyk(63.6%, 57.8%, 0%, 19.2%)
CIE-LAB	lab(42.41, 32.39, -63.19)
CIE-LCH	lch(42.41, 71.01, 297.14°)
OKLab	oklab(51.63% 0.012 -0.1818)
OKLCH	oklch(51.63% 0.182 273.8)
XYZ	xyz(17.4467, 12.7670, 59.9254)
Luminance	0.1277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B57CE #CEC24B

analogous

#4B98CE #4B57CE #814BCE

triadic

#4B57CE #CE4B57 #57CE4B

tetradic

#4B57CE #CE4B98 #CEC24B #4BCE81

square

#4B57CE #CE4B98 #CEC24B #4BCE81

split-complementary

#4B57CE #CE814B #98CE4B

monochromatic

#222A7D #2F3BAD #4B57CE #7B84DB #ABB1E8

Accessibility & contrast

On white

5.91

#4B57CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#4B57CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B57CE

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B57CE	#FFFFFF	#000000	##FFFFFF
##4B57CE	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD2

Deuteranopia (green-blind)

#005ECC

Tritanopia (blue-blind)

#00748A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4b57ce;
/* rgb */ color: rgb(75, 87, 206);
/* oklch */ color: oklch(51.6% 0.182 273.8);

Tailwind

colors: {
  custom: {
    50: '#8b86de',
    500: '#4b57ce',
    950: '#000000',
  },
}

SCSS

$custom: #4b57ce;
$custom-light: #8b86de;
$custom-dark: #000000;

JSON

{
  "hex": "#4b57ce",
  "rgb": {
    "r": 75,
    "g": 87,
    "b": 206
  },
  "hsl": {
    "h": 234.504,
    "s": 57.205,
    "l": 55.098
  },
  "oklch": {
    "l": 0.51631,
    "c": 0.18219,
    "h": 273.8
  },
  "luminance": 0.12768
}

Semantic roles & 50–950 ramp

primary

#4B57CE

secondary

#D6D19F

accent

#D247E0

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4B57CE

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

Preview Lab → · Contrast checker → · Palette generator →