#4B51DA#4B51DA

#4B51DA is a mid, highly saturated blue. Relative luminance 0.124; OKLCH L 51.6% C 0.205 H 274.6°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#4B51DA
RGB	rgb(75, 81, 218)
HSL	hsl(237, 66%, 57%)
HSV	hsv(237, 66%, 85%)
CMYK	cmyk(65.6%, 62.8%, 0%, 14.5%)
CIE-LAB	lab(41.91, 40.13, -70.90)
CIE-LCH	lch(41.91, 81.47, 299.51°)
OKLab	oklab(51.55% 0.0166 -0.2045)
OKLCH	oklch(51.55% 0.205 274.6)
XYZ	xyz(18.4948, 12.4410, 67.7428)
Luminance	0.1244 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51DA #DAD44B

analogous

#4B98DA #4B51DA #8D4BDA

triadic

#4B51DA #DA4B51 #51DA4B

tetradic

#4B51DA #DA4B98 #DAD44B #4BDA8D

square

#4B51DA #DA4B98 #DAD44B #4BDA8D

split-complementary

#4B51DA #DA8D4B #98DA4B

monochromatic

#1D228E #282EC0 #4B51DA #7E82E4 #B1B3EF

Accessibility & contrast

On white

6.02

#4B51DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#4B51DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51DA

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51DA	#FFFFFF	#000000	##FFFFFF
##4B51DA	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DE

Deuteranopia (green-blind)

#005DD7

Tritanopia (blue-blind)

#00748E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4b51da;
/* rgb */ color: rgb(75, 81, 218);
/* oklch */ color: oklch(51.6% 0.205 274.6);

Tailwind

colors: {
  custom: {
    50: '#8e82e6',
    500: '#4b51da',
    950: '#000000',
  },
}

SCSS

$custom: #4b51da;
$custom-light: #8e82e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51da",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 218
  },
  "hsl": {
    "h": 237.483,
    "s": 65.899,
    "l": 57.451
  },
  "oklch": {
    "l": 0.51552,
    "c": 0.20513,
    "h": 274.6
  },
  "luminance": 0.12443
}

Semantic roles & 50–950 ramp

primary

#4B51DA

secondary

#DDDBA4

accent

#E23FE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4B51DA

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

Preview Lab → · Contrast checker → · Palette generator →