#4F51E4#4F51E4

#4F51E4 is a mid, highly saturated blue. Relative luminance 0.131; OKLCH L 52.7% C 0.217 H 275.4°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#4F51E4
RGB	rgb(79, 81, 228)
HSL	hsl(239, 73%, 60%)
HSV	hsv(239, 65%, 89%)
CMYK	cmyk(65.4%, 64.5%, 0%, 10.6%)
CIE-LAB	lab(42.98, 43.98, -74.82)
CIE-LCH	lch(42.98, 86.79, 300.44°)
OKLab	oklab(52.66% 0.0204 -0.2159)
OKLCH	oklch(52.66% 0.217 275.4)
XYZ	xyz(20.1659, 13.1468, 74.8586)
Luminance	0.1315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F51E4 #E4E24F

analogous

#4F9BE4 #4F51E4 #984FE4

triadic

#4F51E4 #E44F51 #51E44F

tetradic

#4F51E4 #E44F9B #E4E24F #4FE498

square

#4F51E4 #E44F9B #E4E24F #4FE498

split-complementary

#4F51E4 #E4984F #9BE44F

monochromatic

#191AA0 #2123D5 #4F51E4 #8485EC #B9BAF4

Accessibility & contrast

On white

5.79

#4F51E4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#4F51E4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F51E4

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F51E4	#FFFFFF	#000000	##FFFFFF
##4F51E4	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CE9

Deuteranopia (green-blind)

#005FE1

Tritanopia (blue-blind)

#007793

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4f51e4;
/* rgb */ color: rgb(79, 81, 228);
/* oklch */ color: oklch(52.7% 0.217 275.4);

Tailwind

colors: {
  custom: {
    50: '#9182ee',
    500: '#4f51e4',
    950: '#000000',
  },
}

SCSS

$custom: #4f51e4;
$custom-light: #9182ee;
$custom-dark: #000000;

JSON

{
  "hex": "#4f51e4",
  "rgb": {
    "r": 79,
    "g": 81,
    "b": 228
  },
  "hsl": {
    "h": 239.195,
    "s": 73.399,
    "l": 60.196
  },
  "oklch": {
    "l": 0.52658,
    "c": 0.21683,
    "h": 275.4
  },
  "luminance": 0.13149
}

Semantic roles & 50–950 ramp

primary

#4F51E4

secondary

#E4E3AB

accent

#D310D6

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4F51E4

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

Preview Lab → · Contrast checker → · Palette generator →