#4B51CA#4B51CA

#4B51CA is a mid, vivid blue. Relative luminance 0.116; OKLCH L 50.2% C 0.184 H 275.4°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#4B51CA
RGB	rgb(75, 81, 202)
HSL	hsl(237, 55%, 54%)
HSV	hsv(237, 63%, 79%)
CMYK	cmyk(62.9%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(40.64, 34.78, -63.76)
CIE-LCH	lch(40.64, 72.62, 298.61°)
OKLab	oklab(50.23% 0.0173 -0.1835)
OKLCH	oklch(50.23% 0.184 275.4)
XYZ	xyz(16.5013, 11.6436, 57.2435)
Luminance	0.1164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51CA #CAC44B

analogous

#4B91CA #4B51CA #854BCA

triadic

#4B51CA #CA4B51 #51CA4B

tetradic

#4B51CA #CA4B91 #CAC44B #4BCA85

square

#4B51CA #CA4B91 #CAC44B #4BCA85

split-complementary

#4B51CA #CA854B #91CA4B

monochromatic

#232777 #3137A7 #4B51CA #7A7FD8 #AAACE6

Accessibility & contrast

On white

6.31

#4B51CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#4B51CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51CA

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51CA	#FFFFFF	#000000	##FFFFFF
##4B51CA	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)

#0065CE

Deuteranopia (green-blind)

#005AC8

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4b51ca;
/* rgb */ color: rgb(75, 81, 202);
/* oklch */ color: oklch(50.2% 0.184 275.4);

Tailwind

colors: {
  custom: {
    50: '#8b82db',
    500: '#4b51ca',
    950: '#000000',
  },
}

SCSS

$custom: #4b51ca;
$custom-light: #8b82db;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51ca",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 237.165,
    "s": 54.506,
    "l": 54.314
  },
  "oklch": {
    "l": 0.50228,
    "c": 0.1843,
    "h": 275.4
  },
  "luminance": 0.11645
}

Semantic roles & 50–950 ramp

primary

#4B51CA

secondary

#D3D19D

accent

#D74ADE

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4B51CA

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

Preview Lab → · Contrast checker → · Palette generator →