#4E51E9#4E51E9

#4E51E9 is a mid, highly saturated blue. Relative luminance 0.134; OKLCH L 53.0% C 0.223 H 274.8°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#4E51E9
RGB	rgb(78, 81, 233)
HSL	hsl(239, 78%, 61%)
HSV	hsv(239, 67%, 91%)
CMYK	cmyk(66.5%, 65.2%, 0%, 8.6%)
CIE-LAB	lab(43.34, 45.48, -77.08)
CIE-LCH	lch(43.34, 89.49, 300.54°)
OKLab	oklab(53.03% 0.0188 -0.2225)
OKLCH	oklch(53.03% 0.223 274.8)
XYZ	xyz(20.7874, 13.3859, 78.5632)
Luminance	0.1339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51E9 #E9E64E

analogous

#4E9EE9 #4E51E9 #984EE9

triadic

#4E51E9 #E94E51 #51E94E

tetradic

#4E51E9 #E94E9E #E9E64E #4EE998

square

#4E51E9 #E94E9E #E9E64E #4EE998

split-complementary

#4E51E9 #E9984E #9EE94E

monochromatic

#1518A8 #1C1FDE #4E51E9 #8487F0 #BBBCF7

Accessibility & contrast

On white

5.71

#4E51E9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#4E51E9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51E9

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51E9	#FFFFFF	#000000	##FFFFFF
##4E51E9	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DEE

Deuteranopia (green-blind)

#005FE6

Tritanopia (blue-blind)

#007996

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #4e51e9;
/* rgb */ color: rgb(78, 81, 233);
/* oklch */ color: oklch(53.0% 0.223 274.8);

Tailwind

colors: {
  custom: {
    50: '#9282f1',
    500: '#4e51e9',
    950: '#000000',
  },
}

SCSS

$custom: #4e51e9;
$custom-light: #9282f1;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51e9",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 233
  },
  "hsl": {
    "h": 238.839,
    "s": 77.889,
    "l": 60.98
  },
  "oklch": {
    "l": 0.53029,
    "c": 0.2233,
    "h": 274.8
  },
  "luminance": 0.13388
}

Semantic roles & 50–950 ramp

primary

#4E51E9

secondary

#E7E5AC

accent

#D60BDA

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A17

muted

#7E7C85

Preview Lab

Preview with #4E51E9

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

Preview Lab → · Contrast checker → · Palette generator →