#5170E1#5170E1

#5170E1 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.2% C 0.175 H 268.9°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#5170E1
RGB	rgb(81, 112, 225)
HSL	hsl(227, 71%, 60%)
HSV	hsv(227, 64%, 88%)
CMYK	cmyk(64%, 50.2%, 0%, 11.8%)
CIE-LAB	lab(50.42, 24.26, -61.04)
CIE-LCH	lch(50.42, 65.69, 291.68°)
OKLab	oklab(58.15% -0.0035 -0.175)
OKLCH	oklch(58.15% 0.175 268.9)
XYZ	xyz(22.7735, 18.7719, 73.6428)
Luminance	0.1877 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170E1 #E1C251

analogous

#51B8E1 #5170E1 #7A51E1

triadic

#5170E1 #E15170 #70E151

tetradic

#5170E1 #E151B8 #E1C251 #51E17A

square

#5170E1 #E151B8 #E1C251 #51E17A

split-complementary

#5170E1 #E17A51 #B8E151

monochromatic

#1B379D #2449D1 #5170E1 #859BEA #B9C6F3

Accessibility & contrast

On white

4.42

#5170E1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#5170E1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5170E1

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170E1	#FFFFFF	#000000	##000000
##5170E1	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F7FE5

Deuteranopia (green-blind)

#0072DF

Tritanopia (blue-blind)

#008A9E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #5170e1;
/* rgb */ color: rgb(81, 112, 225);
/* oklch */ color: oklch(58.2% 0.175 268.9);

Tailwind

colors: {
  custom: {
    50: '#9098eb',
    500: '#5170e1',
    950: '#000000',
  },
}

SCSS

$custom: #5170e1;
$custom-light: #9098eb;
$custom-dark: #000000;

JSON

{
  "hex": "#5170e1",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 225
  },
  "hsl": {
    "h": 227.083,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.58152,
    "c": 0.17505,
    "h": 268.9
  },
  "luminance": 0.18774
}

Semantic roles & 50–950 ramp

primary

#5170E1

secondary

#E3D7AB

accent

#C73AED

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5170E1

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

Preview Lab → · Contrast checker → · Palette generator →