#4F51E7#4F51E7

#4F51E7 is a mid, highly saturated blue. Relative luminance 0.133; OKLCH L 52.9% C 0.221 H 275.2°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#4F51E7
RGB	rgb(79, 81, 231)
HSL	hsl(239, 76%, 61%)
HSV	hsv(239, 66%, 91%)
CMYK	cmyk(65.8%, 64.9%, 0%, 9.4%)
CIE-LAB	lab(43.23, 44.95, -76.11)
CIE-LCH	lch(43.23, 88.40, 300.57°)
OKLab	oklab(52.92% 0.0202 -0.2196)
OKLCH	oklch(52.92% 0.221 275.2)
XYZ	xyz(20.5859, 13.3148, 77.0710)
Luminance	0.1332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F51E7 #E7E54F

analogous

#4F9DE7 #4F51E7 #994FE7

triadic

#4F51E7 #E74F51 #51E74F

tetradic

#4F51E7 #E74F9D #E7E54F #4FE799

square

#4F51E7 #E74F9D #E7E54F #4FE799

split-complementary

#4F51E7 #E7994F #9DE74F

monochromatic

#1718A5 #1E20DB #4F51E7 #8586EE #BBBBF6

Accessibility & contrast

On white

5.73

#4F51E7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#4F51E7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F51E7

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F51E7	#FFFFFF	#000000	##FFFFFF
##4F51E7	1.00	5.73	3.66	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DEC

Deuteranopia (green-blind)

#005FE4

Tritanopia (blue-blind)

#007895

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #4f51e7;
/* rgb */ color: rgb(79, 81, 231);
/* oklch */ color: oklch(52.9% 0.221 275.2);

Tailwind

colors: {
  custom: {
    50: '#9282f0',
    500: '#4f51e7',
    950: '#000000',
  },
}

SCSS

$custom: #4f51e7;
$custom-light: #9282f0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f51e7",
  "rgb": {
    "r": 79,
    "g": 81,
    "b": 231
  },
  "hsl": {
    "h": 239.211,
    "s": 76,
    "l": 60.784
  },
  "oklch": {
    "l": 0.52917,
    "c": 0.22057,
    "h": 275.2
  },
  "luminance": 0.13317
}

Semantic roles & 50–950 ramp

primary

#4F51E7

secondary

#E6E5AC

accent

#D60DD8

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A17

muted

#7E7C85

Preview Lab

Preview with #4F51E7

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

Preview Lab → · Contrast checker → · Palette generator →