#4E51B2#4E51B2

#4E51B2 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.6% C 0.151 H 277.8°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#4E51B2
RGB	rgb(78, 81, 178)
HSL	hsl(238, 39%, 50%)
HSV	hsv(238, 56%, 70%)
CMYK	cmyk(56.2%, 54.5%, 0%, 30.2%)
CIE-LAB	lab(39.10, 27.29, -52.23)
CIE-LCH	lch(39.10, 58.93, 297.59°)
OKLab	oklab(48.58% 0.0206 -0.1495)
OKLCH	oklch(48.58% 0.151 277.8)
XYZ	xyz(14.1176, 10.7180, 43.4357)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51B2 #B2AF4E

analogous

#4E83B2 #4E51B2 #7D4EB2

triadic

#4E51B2 #B24E51 #51B24E

tetradic

#4E51B2 #B24E83 #B2AF4E #4EB27D

square

#4E51B2 #B24E83 #B2AF4E #4EB27D

split-complementary

#4E51B2 #B27D4E #83B24E

monochromatic

#292A5D #3B3D88 #4E51B2 #797BC5 #A3A5D7

Accessibility & contrast

On white

6.68

#4E51B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#4E51B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51B2

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51B2	#FFFFFF	#000000	##FFFFFF
##4E51B2	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1460B5

Deuteranopia (green-blind)

#0058B0

Tritanopia (blue-blind)

#196779

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4e51b2;
/* rgb */ color: rgb(78, 81, 178);
/* oklch */ color: oklch(48.6% 0.151 277.8);

Tailwind

colors: {
  custom: {
    50: '#8881ca',
    500: '#4e51b2',
    950: '#000000',
  },
}

SCSS

$custom: #4e51b2;
$custom-light: #8881ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51b2",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 178
  },
  "hsl": {
    "h": 238.2,
    "s": 39.37,
    "l": 50.196
  },
  "oklch": {
    "l": 0.48583,
    "c": 0.15091,
    "h": 277.8
  },
  "luminance": 0.10719
}

Semantic roles & 50–950 ramp

primary

#4E51B2

secondary

#C4C398

accent

#CC59CF

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #4E51B2

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

Preview Lab → · Contrast checker → · Palette generator →