#5171E4#5171E4

#5171E4 is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.6% C 0.178 H 268.7°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#5171E4
RGB	rgb(81, 113, 228)
HSL	hsl(227, 73%, 61%)
HSV	hsv(227, 64%, 89%)
CMYK	cmyk(64.5%, 50.4%, 0%, 10.6%)
CIE-LAB	lab(50.87, 24.67, -62.00)
CIE-LCH	lch(50.87, 66.73, 291.70°)
OKLab	oklab(58.56% -0.0041 -0.1778)
OKLCH	oklch(58.56% 0.178 268.7)
XYZ	xyz(23.2973, 19.1589, 75.8540)
Luminance	0.1916 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171E4 #E4C451

analogous

#51BAE4 #5171E4 #7A51E4

triadic

#5171E4 #E45171 #71E451

tetradic

#5171E4 #E451BA #E4C451 #51E47A

square

#5171E4 #E451BA #E4C451 #51E47A

split-complementary

#5171E4 #E47A51 #BAE451

monochromatic

#1937A2 #2149D7 #5171E4 #869CEC #BBC7F4

Accessibility & contrast

On white

4.35

#5171E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#5171E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171E4

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171E4	#FFFFFF	#000000	##000000
##5171E4	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E80E8

Deuteranopia (green-blind)

#0073E2

Tritanopia (blue-blind)

#008CA0

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5171e4;
/* rgb */ color: rgb(81, 113, 228);
/* oklch */ color: oklch(58.6% 0.178 268.7);

Tailwind

colors: {
  custom: {
    50: '#9099ed',
    500: '#5171e4',
    950: '#000000',
  },
}

SCSS

$custom: #5171e4;
$custom-light: #9099ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5171e4",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 228
  },
  "hsl": {
    "h": 226.939,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.58558,
    "c": 0.17788,
    "h": 268.7
  },
  "luminance": 0.19161
}

Semantic roles & 50–950 ramp

primary

#5171E4

secondary

#E4D8AC

accent

#AA10D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5171E4

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

Preview Lab → · Contrast checker → · Palette generator →