#5151E6#5151E6

#5151E6 is a mid, highly saturated blue. Relative luminance 0.133; OKLCH L 53.0% C 0.219 H 275.9°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#5151E6
RGB	rgb(81, 81, 230)
HSL	hsl(240, 75%, 61%)
HSV	hsv(240, 65%, 90%)
CMYK	cmyk(64.8%, 64.8%, 0%, 9.8%)
CIE-LAB	lab(43.28, 44.89, -75.47)
CIE-LCH	lch(43.28, 87.81, 300.75°)
OKLab	oklab(52.96% 0.0226 -0.2177)
OKLCH	oklch(52.96% 0.219 275.9)
XYZ	xyz(20.6140, 13.3456, 76.3372)
Luminance	0.1335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151E6 #E6E651

analogous

#519BE6 #5151E6 #9B51E6

triadic

#5151E6 #E65151 #51E651

tetradic

#5151E6 #E6519B #E6E651 #51E69B

square

#5151E6 #E6519B #E6E651 #51E69B

split-complementary

#5151E6 #E69B51 #9BE651

monochromatic

#1818A5 #1F1FDA #5151E6 #8787EE #BCBCF5

Accessibility & contrast

On white

5.72

#5151E6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#5151E6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151E6

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151E6	#FFFFFF	#000000	##FFFFFF
##5151E6	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DEB

Deuteranopia (green-blind)

#0060E3

Tritanopia (blue-blind)

#007894

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #5151e6;
/* rgb */ color: rgb(81, 81, 230);
/* oklch */ color: oklch(53.0% 0.219 275.9);

Tailwind

colors: {
  custom: {
    50: '#9382ef',
    500: '#5151e6',
    950: '#000000',
  },
}

SCSS

$custom: #5151e6;
$custom-light: #9382ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5151e6",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 230
  },
  "hsl": {
    "h": 240,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.52958,
    "c": 0.21887,
    "h": 275.9
  },
  "luminance": 0.13347
}

Semantic roles & 50–950 ramp

primary

#5151E6

secondary

#E5E5AD

accent

#D70ED7

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A17

muted

#7E7C85

Preview Lab

Preview with #5151E6

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

Preview Lab → · Contrast checker → · Palette generator →