#4A51CB#4A51CB

#4A51CB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.2% C 0.186 H 275.0°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#4A51CB
RGB	rgb(74, 81, 203)
HSL	hsl(237, 55%, 54%)
HSV	hsv(237, 64%, 80%)
CMYK	cmyk(63.5%, 60.1%, 0%, 20.4%)
CIE-LAB	lab(40.66, 34.95, -64.32)
CIE-LCH	lch(40.66, 73.20, 298.52°)
OKLab	oklab(50.24% 0.0162 -0.1852)
OKLCH	oklch(50.24% 0.186 275)
XYZ	xyz(16.5424, 11.6511, 57.8655)
Luminance	0.1165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4A51CB #CBC44A

analogous

#4A92CB #4A51CB #844ACB

triadic

#4A51CB #CB4A51 #51CB4A

tetradic

#4A51CB #CB4A92 #CBC44A #4ACB84

square

#4A51CB #CB4A92 #CBC44A #4ACB84

split-complementary

#4A51CB #CB844A #92CB4A

monochromatic

#232778 #3037A8 #4A51CB #7A7FD9 #A9ACE6

Accessibility & contrast

On white

6.31

#4A51CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#4A51CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4A51CB

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4A51CB	#FFFFFF	#000000	##FFFFFF
##4A51CB	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CF

Deuteranopia (green-blind)

#005AC9

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4a51cb;
/* rgb */ color: rgb(74, 81, 203);
/* oklch */ color: oklch(50.2% 0.186 275.0);

Tailwind

colors: {
  custom: {
    50: '#8a82dc',
    500: '#4a51cb',
    950: '#000000',
  },
}

SCSS

$custom: #4a51cb;
$custom-light: #8a82dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4a51cb",
  "rgb": {
    "r": 74,
    "g": 81,
    "b": 203
  },
  "hsl": {
    "h": 236.744,
    "s": 55.365,
    "l": 54.314
  },
  "oklch": {
    "l": 0.50244,
    "c": 0.18587,
    "h": 275
  },
  "luminance": 0.11653
}

Semantic roles & 50–950 ramp

primary

#4A51CB

secondary

#D4D19D

accent

#D749DF

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4A51CB

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

Preview Lab → · Contrast checker → · Palette generator →