#5151C2#5151C2

#5151C2 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 50.0% C 0.172 H 278.2°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#5151C2
RGB	rgb(81, 81, 194)
HSL	hsl(240, 48%, 54%)
HSV	hsv(240, 58%, 76%)
CMYK	cmyk(58.2%, 58.2%, 0%, 23.9%)
CIE-LAB	lab(40.46, 33.14, -59.40)
CIE-LCH	lch(40.46, 68.02, 299.15°)
OKLab	oklab(50.01% 0.0245 -0.1705)
OKLCH	oklch(50.01% 0.172 278.2)
XYZ	xyz(16.0703, 11.5281, 52.4068)
Luminance	0.1153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151C2 #C2C251

analogous

#518AC2 #5151C2 #8A51C2

triadic

#5151C2 #C25151 #51C251

tetradic

#5151C2 #C2518A #C2C251 #51C28A

square

#5151C2 #C2518A #C2C251 #51C28A

split-complementary

#5151C2 #C28A51 #8AC251

monochromatic

#282871 #37379E #5151C2 #7E7ED2 #ACACE2

Accessibility & contrast

On white

6.35

#5151C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#5151C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151C2

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151C2	#FFFFFF	#000000	##FFFFFF
##5151C2	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C6

Deuteranopia (green-blind)

#005BC0

Tritanopia (blue-blind)

#026C81

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #5151c2;
/* rgb */ color: rgb(81, 81, 194);
/* oklch */ color: oklch(50.0% 0.172 278.2);

Tailwind

colors: {
  custom: {
    50: '#8c82d5',
    500: '#5151c2',
    950: '#000000',
  },
}

SCSS

$custom: #5151c2;
$custom-light: #8c82d5;
$custom-dark: #000000;

JSON

{
  "hex": "#5151c2",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 194
  },
  "hsl": {
    "h": 240,
    "s": 48.085,
    "l": 53.922
  },
  "oklch": {
    "l": 0.50007,
    "c": 0.17227,
    "h": 278.2
  },
  "luminance": 0.11529
}

Semantic roles & 50–950 ramp

primary

#5151C2

secondary

#D0D09F

accent

#D850D8

background

#F9F7FD

surface

#F1EEFA

border

#CBC9D3

text

#0D0A14

muted

#7E7C83

Preview Lab

Preview with #5151C2

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

Preview Lab → · Contrast checker → · Palette generator →