#4E51CB#4E51CB

#4E51CB is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.5% C 0.185 H 276.4°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#4E51CB
RGB	rgb(78, 81, 203)
HSL	hsl(239, 55%, 55%)
HSV	hsv(239, 62%, 80%)
CMYK	cmyk(61.6%, 60.1%, 0%, 20.4%)
CIE-LAB	lab(40.92, 35.59, -63.88)
CIE-LCH	lch(40.92, 73.12, 299.13°)
OKLab	oklab(50.51% 0.0208 -0.1838)
OKLCH	oklch(50.51% 0.185 276.4)
XYZ	xyz(16.8603, 11.8150, 57.8804)
Luminance	0.1182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51CB #CBC84E

analogous

#4E8FCB #4E51CB #894ECB

triadic

#4E51CB #CB4E51 #51CB4E

tetradic

#4E51CB #CB4E8F #CBC84E #4ECB89

square

#4E51CB #CB4E8F #CBC84E #4ECB89

split-complementary

#4E51CB #CB894E #8FCB4E

monochromatic

#24267B #3235AA #4E51CB #7D80D9 #ADAEE7

Accessibility & contrast

On white

6.24

#4E51CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#4E51CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51CB

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51CB	#FFFFFF	#000000	##FFFFFF
##4E51CB	1.00	6.24	3.36	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CF

Deuteranopia (green-blind)

#005BC9

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4e51cb;
/* rgb */ color: rgb(78, 81, 203);
/* oklch */ color: oklch(50.5% 0.185 276.4);

Tailwind

colors: {
  custom: {
    50: '#8c82dc',
    500: '#4e51cb',
    950: '#000000',
  },
}

SCSS

$custom: #4e51cb;
$custom-light: #8c82dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51cb",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 203
  },
  "hsl": {
    "h": 238.56,
    "s": 54.585,
    "l": 55.098
  },
  "oklch": {
    "l": 0.50508,
    "c": 0.18493,
    "h": 276.4
  },
  "luminance": 0.11816
}

Semantic roles & 50–950 ramp

primary

#4E51CB

secondary

#D5D3A0

accent

#DA4ADE

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4E51CB

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

Preview Lab → · Contrast checker → · Palette generator →