#4B51D5#4B51D5

#4B51D5 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 51.1% C 0.199 H 274.9°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#4B51D5
RGB	rgb(75, 81, 213)
HSL	hsl(237, 62%, 56%)
HSV	hsv(237, 65%, 84%)
CMYK	cmyk(64.8%, 62%, 0%, 16.5%)
CIE-LAB	lab(41.51, 38.46, -68.69)
CIE-LCH	lch(41.51, 78.73, 299.25°)
OKLab	oklab(51.13% 0.0169 -0.198)
OKLCH	oklch(51.13% 0.199 274.9)
XYZ	xyz(17.8504, 12.1833, 64.3488)
Luminance	0.1218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51D5 #D5CF4B

analogous

#4B96D5 #4B51D5 #8A4BD5

triadic

#4B51D5 #D54B51 #51D54B

tetradic

#4B51D5 #D54B96 #D5CF4B #4BD58A

square

#4B51D5 #D54B96 #D5CF4B #4BD58A

split-complementary

#4B51D5 #D58A4B #96D54B

monochromatic

#1F2486 #2B31B8 #4B51D5 #7D81E1 #AEB1EC

Accessibility & contrast

On white

6.11

#4B51D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#4B51D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51D5

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51D5	#FFFFFF	#000000	##FFFFFF
##4B51D5	1.00	6.11	3.44	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D9

Deuteranopia (green-blind)

#005CD2

Tritanopia (blue-blind)

#00728B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4b51d5;
/* rgb */ color: rgb(75, 81, 213);
/* oklch */ color: oklch(51.1% 0.199 274.9);

Tailwind

colors: {
  custom: {
    50: '#8d82e3',
    500: '#4b51d5',
    950: '#000000',
  },
}

SCSS

$custom: #4b51d5;
$custom-light: #8d82e3;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51d5",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 213
  },
  "hsl": {
    "h": 237.391,
    "s": 62.162,
    "l": 56.471
  },
  "oklch": {
    "l": 0.51132,
    "c": 0.1987,
    "h": 274.9
  },
  "luminance": 0.12185
}

Semantic roles & 50–950 ramp

primary

#4B51D5

secondary

#DAD8A2

accent

#DE43E5

background

#F9F7FE

surface

#F2EEFC

border

#CCC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #4B51D5

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

Preview Lab → · Contrast checker → · Palette generator →