#5151D3#5151D3

#5151D3 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 51.4% C 0.195 H 277.1°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#5151D3
RGB	rgb(81, 81, 211)
HSL	hsl(240, 60%, 57%)
HSV	hsv(240, 62%, 83%)
CMYK	cmyk(61.6%, 61.6%, 0%, 17.3%)
CIE-LAB	lab(41.75, 38.71, -67.13)
CIE-LCH	lch(41.75, 77.49, 299.97°)
OKLab	oklab(51.36% 0.024 -0.1933)
OKLCH	oklch(51.36% 0.195 277.1)
XYZ	xyz(18.0898, 12.3359, 63.0432)
Luminance	0.1234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151D3 #D3D351

analogous

#5192D3 #5151D3 #9251D3

triadic

#5151D3 #D35151 #51D351

tetradic

#5151D3 #D35192 #D3D351 #51D392

square

#5151D3 #D35192 #D3D351 #51D392

split-complementary

#5151D3 #D39251 #92D351

monochromatic

#222287 #2F2FB8 #5151D3 #8282DF #B3B3EC

Accessibility & contrast

On white

6.06

#5151D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#5151D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151D3

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151D3	#FFFFFF	#000000	##FFFFFF
##5151D3	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D7

Deuteranopia (green-blind)

#005DD0

Tritanopia (blue-blind)

#00718A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #5151d3;
/* rgb */ color: rgb(81, 81, 211);
/* oklch */ color: oklch(51.4% 0.195 277.1);

Tailwind

colors: {
  custom: {
    50: '#8f82e1',
    500: '#5151d3',
    950: '#000000',
  },
}

SCSS

$custom: #5151d3;
$custom-light: #8f82e1;
$custom-dark: #000000;

JSON

{
  "hex": "#5151d3",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 211
  },
  "hsl": {
    "h": 240,
    "s": 59.633,
    "l": 57.255
  },
  "oklch": {
    "l": 0.51361,
    "c": 0.19474,
    "h": 277.1
  },
  "luminance": 0.12337
}

Semantic roles & 50–950 ramp

primary

#5151D3

secondary

#DADAA6

accent

#E345E3

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0A15

muted

#7E7C83

Preview Lab

Preview with #5151D3

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

Preview Lab → · Contrast checker → · Palette generator →