#5171E3#5171E3

#5171E3 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.5% C 0.177 H 268.6°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#5171E3
RGB	rgb(81, 113, 227)
HSL	hsl(227, 72%, 60%)
HSV	hsv(227, 64%, 89%)
CMYK	cmyk(64.3%, 50.2%, 0%, 11%)
CIE-LAB	lab(50.81, 24.33, -61.54)
CIE-LCH	lch(50.81, 66.18, 291.57°)
OKLab	oklab(58.49% -0.0042 -0.1765)
OKLCH	oklch(58.49% 0.177 268.6)
XYZ	xyz(23.1589, 19.1035, 75.1250)
Luminance	0.1911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171E3 #E3C351

analogous

#51BAE3 #5171E3 #7A51E3

triadic

#5171E3 #E35171 #71E351

tetradic

#5171E3 #E351BA #E3C351 #51E37A

square

#5171E3 #E351BA #E3C351 #51E37A

split-complementary

#5171E3 #E37A51 #BAE351

monochromatic

#1A37A0 #2249D5 #5171E3 #869CEB #BAC7F4

Accessibility & contrast

On white

4.36

#5171E3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#5171E3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171E3

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171E3	#FFFFFF	#000000	##000000
##5171E3	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F80E7

Deuteranopia (green-blind)

#0073E1

Tritanopia (blue-blind)

#008C9F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5171e3;
/* rgb */ color: rgb(81, 113, 227);
/* oklch */ color: oklch(58.5% 0.177 268.6);

Tailwind

colors: {
  custom: {
    50: '#9099ec',
    500: '#5171e3',
    950: '#000000',
  },
}

SCSS

$custom: #5171e3;
$custom-light: #9099ec;
$custom-dark: #000000;

JSON

{
  "hex": "#5171e3",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 227
  },
  "hsl": {
    "h": 226.849,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.58488,
    "c": 0.17653,
    "h": 268.6
  },
  "luminance": 0.19106
}

Semantic roles & 50–950 ramp

primary

#5171E3

secondary

#E4D8AC

accent

#AA11D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5171E3

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

Preview Lab → · Contrast checker → · Palette generator →