#5151D5#5151D5

#5151D5 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.5% C 0.197 H 276.9°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#5151D5
RGB	rgb(81, 81, 213)
HSL	hsl(240, 61%, 58%)
HSV	hsv(240, 62%, 84%)
CMYK	cmyk(62%, 62%, 0%, 16.5%)
CIE-LAB	lab(41.90, 39.36, -68.03)
CIE-LCH	lch(41.90, 78.59, 300.05°)
OKLab	oklab(51.53% 0.0238 -0.1959)
OKLCH	oklch(51.53% 0.197 276.9)
XYZ	xyz(18.3421, 12.4368, 64.3719)
Luminance	0.1244 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151D5 #D5D551

analogous

#5193D5 #5151D5 #9351D5

triadic

#5151D5 #D55151 #51D551

tetradic

#5151D5 #D55193 #D5D551 #51D593

square

#5151D5 #D55193 #D5D551 #51D593

split-complementary

#5151D5 #D59351 #93D551

monochromatic

#21218A #2D2DBC #5151D5 #8282E1 #B4B4ED

Accessibility & contrast

On white

6.02

#5151D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#5151D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151D5

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151D5	#FFFFFF	#000000	##FFFFFF
##5151D5	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)

#0069D9

Deuteranopia (green-blind)

#005DD2

Tritanopia (blue-blind)

#00728B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #5151d5;
/* rgb */ color: rgb(81, 81, 213);
/* oklch */ color: oklch(51.5% 0.197 276.9);

Tailwind

colors: {
  custom: {
    50: '#8f82e3',
    500: '#5151d5',
    950: '#000000',
  },
}

SCSS

$custom: #5151d5;
$custom-light: #8f82e3;
$custom-dark: #000000;

JSON

{
  "hex": "#5151d5",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 213
  },
  "hsl": {
    "h": 240,
    "s": 61.111,
    "l": 57.647
  },
  "oklch": {
    "l": 0.51525,
    "c": 0.19733,
    "h": 276.9
  },
  "luminance": 0.12438
}

Semantic roles & 50–950 ramp

primary

#5151D5

secondary

#DBDBA6

accent

#E444E4

background

#F9F8FE

surface

#F2EFFC

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #5151D5

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

Preview Lab → · Contrast checker → · Palette generator →