#4E51B8#4E51B8

#4E51B8 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.0% C 0.159 H 277.5°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#4E51B8
RGB	rgb(78, 81, 184)
HSL	hsl(238, 43%, 51%)
HSV	hsv(238, 58%, 72%)
CMYK	cmyk(57.6%, 56%, 0%, 27.8%)
CIE-LAB	lab(39.52, 29.28, -55.08)
CIE-LCH	lch(39.52, 62.38, 297.99°)
OKLab	oklab(49.03% 0.0208 -0.1579)
OKLCH	oklch(49.03% 0.159 277.5)
XYZ	xyz(14.7333, 10.9642, 46.6780)
Luminance	0.1096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51B8 #B8B54E

analogous

#4E86B8 #4E51B8 #804EB8

triadic

#4E51B8 #B84E51 #51B84E

tetradic

#4E51B8 #B84E86 #B8B54E #4EB880

square

#4E51B8 #B84E86 #B8B54E #4EB880

split-complementary

#4E51B8 #B8804E #86B84E

monochromatic

#282A64 #393C8F #4E51B8 #7A7CCA #A5A7DB

Accessibility & contrast

On white

6.58

#4E51B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#4E51B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51B8

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51B8	#FFFFFF	#000000	##FFFFFF
##4E51B8	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BC

Deuteranopia (green-blind)

#0059B6

Tritanopia (blue-blind)

#0C697C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4e51b8;
/* rgb */ color: rgb(78, 81, 184);
/* oklch */ color: oklch(49.0% 0.159 277.5);

Tailwind

colors: {
  custom: {
    50: '#8982ce',
    500: '#4e51b8',
    950: '#000000',
  },
}

SCSS

$custom: #4e51b8;
$custom-light: #8982ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51b8",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 184
  },
  "hsl": {
    "h": 238.302,
    "s": 42.742,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49028,
    "c": 0.15927,
    "h": 277.5
  },
  "luminance": 0.10965
}

Semantic roles & 50–950 ramp

primary

#4E51B8

secondary

#C8C79A

accent

#CF55D3

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4E51B8

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

Preview Lab → · Contrast checker → · Palette generator →