#4B51D8#4B51D8

#4B51D8 is a mid, highly saturated blue. Relative luminance 0.123; OKLCH L 51.4% C 0.203 H 274.7°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#4B51D8
RGB	rgb(75, 81, 216)
HSL	hsl(237, 64%, 57%)
HSV	hsv(237, 65%, 85%)
CMYK	cmyk(65.3%, 62.5%, 0%, 15.3%)
CIE-LAB	lab(41.75, 39.47, -70.02)
CIE-LCH	lch(41.75, 80.37, 299.41°)
OKLab	oklab(51.38% 0.0167 -0.2019)
OKLCH	oklch(51.38% 0.203 274.7)
XYZ	xyz(18.2347, 12.3370, 66.3728)
Luminance	0.1234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51D8 #D8D24B

analogous

#4B98D8 #4B51D8 #8C4BD8

triadic

#4B51D8 #D84B51 #51D84B

tetradic

#4B51D8 #D84B98 #D8D24B #4BD88C

square

#4B51D8 #D84B98 #D8D24B #4BD88C

split-complementary

#4B51D8 #D88C4B #98D84B

monochromatic

#1E238B #292FBD #4B51D8 #7D82E3 #B0B2EE

Accessibility & contrast

On white

6.06

#4B51D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#4B51D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51D8

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51D8	#FFFFFF	#000000	##FFFFFF
##4B51D8	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DC

Deuteranopia (green-blind)

#005CD5

Tritanopia (blue-blind)

#00738D

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4b51d8;
/* rgb */ color: rgb(75, 81, 216);
/* oklch */ color: oklch(51.4% 0.203 274.7);

Tailwind

colors: {
  custom: {
    50: '#8d82e5',
    500: '#4b51d8',
    950: '#000000',
  },
}

SCSS

$custom: #4b51d8;
$custom-light: #8d82e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51d8",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 216
  },
  "hsl": {
    "h": 237.447,
    "s": 64.384,
    "l": 57.059
  },
  "oklch": {
    "l": 0.51383,
    "c": 0.20257,
    "h": 274.7
  },
  "luminance": 0.12339
}

Semantic roles & 50–950 ramp

primary

#4B51D8

secondary

#DCDAA3

accent

#E040E7

background

#F9F7FE

surface

#F2EEFC

border

#CCC9D5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4B51D8

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

Preview Lab → · Contrast checker → · Palette generator →