#4B51CE#4B51CE

#4B51CE is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.6% C 0.190 H 275.2°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#4B51CE
RGB	rgb(75, 81, 206)
HSL	hsl(237, 57%, 55%)
HSV	hsv(237, 64%, 81%)
CMYK	cmyk(63.6%, 60.7%, 0%, 19.2%)
CIE-LAB	lab(40.95, 36.12, -65.56)
CIE-LCH	lch(40.95, 74.85, 298.85°)
OKLab	oklab(50.55% 0.0172 -0.1888)
OKLCH	oklch(50.55% 0.19 275.2)
XYZ	xyz(16.9810, 11.8355, 59.7702)
Luminance	0.1184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51CE #CEC84B

analogous

#4B92CE #4B51CE #874BCE

triadic

#4B51CE #CE4B51 #51CE4B

tetradic

#4B51CE #CE4B92 #CEC84B #4BCE87

square

#4B51CE #CE4B92 #CEC84B #4BCE87

split-complementary

#4B51CE #CE874B #92CE4B

monochromatic

#22267D #2F35AD #4B51CE #7B80DB #ABAEE8

Accessibility & contrast

On white

6.24

#4B51CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#4B51CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51CE

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51CE	#FFFFFF	#000000	##FFFFFF
##4B51CE	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D2

Deuteranopia (green-blind)

#005BCC

Tritanopia (blue-blind)

#007088

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4b51ce;
/* rgb */ color: rgb(75, 81, 206);
/* oklch */ color: oklch(50.6% 0.190 275.2);

Tailwind

colors: {
  custom: {
    50: '#8b82de',
    500: '#4b51ce',
    950: '#000000',
  },
}

SCSS

$custom: #4b51ce;
$custom-light: #8b82de;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51ce",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 206
  },
  "hsl": {
    "h": 237.252,
    "s": 57.205,
    "l": 55.098
  },
  "oklch": {
    "l": 0.50553,
    "c": 0.18958,
    "h": 275.2
  },
  "luminance": 0.11837
}

Semantic roles & 50–950 ramp

primary

#4B51CE

secondary

#D6D39F

accent

#D947E0

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4B51CE

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

Preview Lab → · Contrast checker → · Palette generator →