#4B51E1#4B51E1

#4B51E1 is a mid, highly saturated blue. Relative luminance 0.128; OKLCH L 52.1% C 0.214 H 274.3°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#4B51E1
RGB	rgb(75, 81, 225)
HSL	hsl(238, 71%, 59%)
HSV	hsv(238, 67%, 88%)
CMYK	cmyk(66.7%, 64%, 0%, 11.8%)
CIE-LAB	lab(42.48, 42.46, -73.95)
CIE-LCH	lch(42.48, 85.27, 299.86°)
OKLab	oklab(52.15% 0.0161 -0.2134)
OKLCH	oklch(52.15% 0.214 274.3)
XYZ	xyz(19.4302, 12.8152, 72.6692)
Luminance	0.1282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51E1 #E1DB4B

analogous

#4B9CE1 #4B51E1 #904BE1

triadic

#4B51E1 #E14B51 #51E14B

tetradic

#4B51E1 #E14B9C #E1DB4B #4BE190

square

#4B51E1 #E14B9C #E1DB4B #4BE190

split-complementary

#4B51E1 #E1904B #9CE14B

monochromatic

#191E98 #2229CD #4B51E1 #7F84EA #B4B6F2

Accessibility & contrast

On white

5.89

#4B51E1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#4B51E1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51E1

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51E1	#FFFFFF	#000000	##FFFFFF
##4B51E1	1.00	5.89	3.56	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BE6

Deuteranopia (green-blind)

#005EDE

Tritanopia (blue-blind)

#007692

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4b51e1;
/* rgb */ color: rgb(75, 81, 225);
/* oklch */ color: oklch(52.1% 0.214 274.3);

Tailwind

colors: {
  custom: {
    50: '#8f82eb',
    500: '#4b51e1',
    950: '#000000',
  },
}

SCSS

$custom: #4b51e1;
$custom-light: #8f82eb;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51e1",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 225
  },
  "hsl": {
    "h": 237.6,
    "s": 71.429,
    "l": 58.824
  },
  "oklch": {
    "l": 0.5215,
    "c": 0.21402,
    "h": 274.3
  },
  "luminance": 0.12817
}

Semantic roles & 50–950 ramp

primary

#4B51E1

secondary

#E1DFA6

accent

#E73AEE

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4B51E1

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

Preview Lab → · Contrast checker → · Palette generator →