#5170E4#5170E4

#5170E4 is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.4% C 0.179 H 269.0°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#5170E4
RGB	rgb(81, 112, 228)
HSL	hsl(227, 73%, 61%)
HSV	hsv(227, 64%, 89%)
CMYK	cmyk(64.5%, 50.9%, 0%, 10.6%)
CIE-LAB	lab(50.61, 25.29, -62.42)
CIE-LCH	lch(50.61, 67.35, 292.06°)
OKLab	oklab(58.36% -0.0032 -0.1791)
OKLCH	oklch(58.36% 0.179 269)
XYZ	xyz(23.1863, 18.9370, 75.8170)
Luminance	0.1894 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170E4 #E4C551

analogous

#51B9E4 #5170E4 #7B51E4

triadic

#5170E4 #E45170 #70E451

tetradic

#5170E4 #E451B9 #E4C551 #51E47B

square

#5170E4 #E451B9 #E4C551 #51E47B

split-complementary

#5170E4 #E47B51 #B9E451

monochromatic

#1936A2 #2148D7 #5170E4 #869CEC #BBC7F4

Accessibility & contrast

On white

4.39

#5170E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#5170E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5170E4

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170E4	#FFFFFF	#000000	##000000
##5170E4	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B7FE8

Deuteranopia (green-blind)

#0072E2

Tritanopia (blue-blind)

#008B9F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #5170e4;
/* rgb */ color: rgb(81, 112, 228);
/* oklch */ color: oklch(58.4% 0.179 269.0);

Tailwind

colors: {
  custom: {
    50: '#9098ed',
    500: '#5170e4',
    950: '#000000',
  },
}

SCSS

$custom: #5170e4;
$custom-light: #9098ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5170e4",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 228
  },
  "hsl": {
    "h": 227.347,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.58361,
    "c": 0.1791,
    "h": 269
  },
  "luminance": 0.18939
}

Semantic roles & 50–950 ramp

primary

#5170E4

secondary

#E4D9AC

accent

#AC10D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5170E4

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

Preview Lab → · Contrast checker → · Palette generator →