#4E51B9#4E51B9

#4E51B9 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.1% C 0.161 H 277.5°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#4E51B9
RGB	rgb(78, 81, 185)
HSL	hsl(238, 43%, 52%)
HSV	hsv(238, 58%, 73%)
CMYK	cmyk(57.8%, 56.2%, 0%, 27.5%)
CIE-LAB	lab(39.59, 29.61, -55.55)
CIE-LCH	lch(39.59, 62.95, 298.06°)
OKLab	oklab(49.1% 0.0208 -0.1593)
OKLCH	oklch(49.1% 0.161 277.5)
XYZ	xyz(14.8385, 11.0063, 47.2320)
Luminance	0.1101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51B9 #B9B64E

analogous

#4E87B9 #4E51B9 #814EB9

triadic

#4E51B9 #B94E51 #51B94E

tetradic

#4E51B9 #B94E87 #B9B64E #4EB981

square

#4E51B9 #B94E87 #B9B64E #4EB981

split-complementary

#4E51B9 #B9814E #87B94E

monochromatic

#282A65 #393C91 #4E51B9 #7A7CCA #A6A7DC

Accessibility & contrast

On white

6.56

#4E51B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#4E51B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51B9

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51B9	#FFFFFF	#000000	##FFFFFF
##4E51B9	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BD

Deuteranopia (green-blind)

#0059B7

Tritanopia (blue-blind)

#09697D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4e51b9;
/* rgb */ color: rgb(78, 81, 185);
/* oklch */ color: oklch(49.1% 0.161 277.5);

Tailwind

colors: {
  custom: {
    50: '#8982cf',
    500: '#4e51b9',
    950: '#000000',
  },
}

SCSS

$custom: #4e51b9;
$custom-light: #8982cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51b9",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 185
  },
  "hsl": {
    "h": 238.318,
    "s": 43.32,
    "l": 51.569
  },
  "oklch": {
    "l": 0.49104,
    "c": 0.16065,
    "h": 277.5
  },
  "luminance": 0.11007
}

Semantic roles & 50–950 ramp

primary

#4E51B9

secondary

#C9C89A

accent

#D055D3

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4E51B9

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

Preview Lab → · Contrast checker → · Palette generator →