#4D51CB#4D51CB

#4D51CB is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.4% C 0.185 H 276.1°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#4D51CB
RGB	rgb(77, 81, 203)
HSL	hsl(238, 55%, 55%)
HSV	hsv(238, 62%, 80%)
CMYK	cmyk(62.1%, 60.1%, 0%, 20.4%)
CIE-LAB	lab(40.85, 35.43, -63.99)
CIE-LCH	lch(40.85, 73.14, 298.97°)
OKLab	oklab(50.44% 0.0196 -0.1841)
OKLCH	oklch(50.44% 0.185 276.1)
XYZ	xyz(16.7790, 11.7731, 57.8766)
Luminance	0.1177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D51CB #CBC74D

analogous

#4D90CB #4D51CB #884DCB

triadic

#4D51CB #CB4D51 #51CB4D

tetradic

#4D51CB #CB4D90 #CBC74D #4DCB88

square

#4D51CB #CB4D90 #CBC74D #4DCB88

split-complementary

#4D51CB #CB884D #90CB4D

monochromatic

#24267A #3135A9 #4D51CB #7C7FD9 #ACAEE7

Accessibility & contrast

On white

6.26

#4D51CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#4D51CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4D51CB

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D51CB	#FFFFFF	#000000	##FFFFFF
##4D51CB	1.00	6.26	3.35	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.26	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: #4d51cb;
/* rgb */ color: rgb(77, 81, 203);
/* oklch */ color: oklch(50.4% 0.185 276.1);

Tailwind

colors: {
  custom: {
    50: '#8c82dc',
    500: '#4d51cb',
    950: '#000000',
  },
}

SCSS

$custom: #4d51cb;
$custom-light: #8c82dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4d51cb",
  "rgb": {
    "r": 77,
    "g": 81,
    "b": 203
  },
  "hsl": {
    "h": 238.095,
    "s": 54.783,
    "l": 54.902
  },
  "oklch": {
    "l": 0.50441,
    "c": 0.18516,
    "h": 276.1
  },
  "luminance": 0.11774
}

Semantic roles & 50–950 ramp

primary

#4D51CB

secondary

#D4D39F

accent

#D94ADE

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4D51CB

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

Preview Lab → · Contrast checker → · Palette generator →