#4B51D7#4B51D7

#4B51D7 is a mid, highly saturated blue. Relative luminance 0.123; OKLCH L 51.3% C 0.201 H 274.8°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#4B51D7
RGB	rgb(75, 81, 215)
HSL	hsl(237, 64%, 57%)
HSV	hsv(237, 65%, 84%)
CMYK	cmyk(65.1%, 62.3%, 0%, 15.7%)
CIE-LAB	lab(41.67, 39.13, -69.58)
CIE-LCH	lch(41.67, 79.82, 299.36°)
OKLab	oklab(51.3% 0.0168 -0.2006)
OKLCH	oklch(51.3% 0.201 274.8)
XYZ	xyz(18.1058, 12.2854, 65.6940)
Luminance	0.1229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51D7 #D7D14B

analogous

#4B97D7 #4B51D7 #8B4BD7

triadic

#4B51D7 #D74B51 #51D74B

tetradic

#4B51D7 #D74B97 #D7D14B #4BD78B

square

#4B51D7 #D74B97 #D7D14B #4BD78B

split-complementary

#4B51D7 #D78B4B #97D74B

monochromatic

#1E2389 #2A30BB #4B51D7 #7D81E2 #AFB2ED

Accessibility & contrast

On white

6.07

#4B51D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#4B51D7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51D7

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51D7	#FFFFFF	#000000	##FFFFFF
##4B51D7	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DB

Deuteranopia (green-blind)

#005CD4

Tritanopia (blue-blind)

#00738C

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4b51d7;
/* rgb */ color: rgb(75, 81, 215);
/* oklch */ color: oklch(51.3% 0.201 274.8);

Tailwind

colors: {
  custom: {
    50: '#8d82e4',
    500: '#4b51d7',
    950: '#000000',
  },
}

SCSS

$custom: #4b51d7;
$custom-light: #8d82e4;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51d7",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 215
  },
  "hsl": {
    "h": 237.429,
    "s": 63.636,
    "l": 56.863
  },
  "oklch": {
    "l": 0.51299,
    "c": 0.20128,
    "h": 274.8
  },
  "luminance": 0.12287
}

Semantic roles & 50–950 ramp

primary

#4B51D7

secondary

#DBD9A2

accent

#E041E7

background

#F9F7FE

surface

#F2EEFC

border

#CCC9D5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4B51D7

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

Preview Lab → · Contrast checker → · Palette generator →