#4F57E3#4F57E3

#4F57E3 is a mid, highly saturated blue. Relative luminance 0.140; OKLCH L 53.6% C 0.209 H 274.4°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#4F57E3
RGB	rgb(79, 87, 227)
HSL	hsl(237, 73%, 60%)
HSV	hsv(237, 65%, 89%)
CMYK	cmyk(65.2%, 61.7%, 0%, 11%)
CIE-LAB	lab(44.27, 40.05, -72.16)
CIE-LCH	lch(44.27, 82.53, 299.03°)
OKLab	oklab(53.57% 0.016 -0.208)
OKLCH	oklch(53.57% 0.209 274.4)
XYZ	xyz(20.4932, 14.0229, 74.2849)
Luminance	0.1403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57E3 #E3DB4F

analogous

#4FA1E3 #4F57E3 #914FE3

triadic

#4F57E3 #E34F57 #57E34F

tetradic

#4F57E3 #E34FA1 #E3DB4F #4FE391

square

#4F57E3 #E34FA1 #E3DB4F #4FE391

split-complementary

#4F57E3 #E3914F #A1E34F

monochromatic

#19209E #222BD3 #4F57E3 #8489EB #B9BCF4

Accessibility & contrast

On white

5.52

#4F57E3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#4F57E3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57E3

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57E3	#FFFFFF	#000000	##FFFFFF
##4F57E3	1.00	5.52	3.81	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FE8

Deuteranopia (green-blind)

#0062E0

Tritanopia (blue-blind)

#007A95

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4f57e3;
/* rgb */ color: rgb(79, 87, 227);
/* oklch */ color: oklch(53.6% 0.209 274.4);

Tailwind

colors: {
  custom: {
    50: '#9186ed',
    500: '#4f57e3',
    950: '#000000',
  },
}

SCSS

$custom: #4f57e3;
$custom-light: #9186ed;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57e3",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 227
  },
  "hsl": {
    "h": 236.757,
    "s": 72.549,
    "l": 60
  },
  "oklch": {
    "l": 0.53571,
    "c": 0.20864,
    "h": 274.4
  },
  "luminance": 0.14025
}

Semantic roles & 50–950 ramp

primary

#4F57E3

secondary

#E3E0AA

accent

#E539EF

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #4F57E3

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

Preview Lab → · Contrast checker → · Palette generator →