#5171E7#5171E7

#5171E7 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.8% C 0.182 H 268.8°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#5171E7
RGB	rgb(81, 113, 231)
HSL	hsl(227, 76%, 61%)
HSV	hsv(227, 65%, 91%)
CMYK	cmyk(64.9%, 51.1%, 0%, 9.4%)
CIE-LAB	lab(51.07, 25.70, -63.37)
CIE-LCH	lch(51.07, 68.38, 292.07°)
OKLab	oklab(58.77% -0.0038 -0.1819)
OKLCH	oklch(58.77% 0.182 268.8)
XYZ	xyz(23.7173, 19.3269, 78.0664)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171E7 #E7C751

analogous

#51BCE7 #5171E7 #7C51E7

triadic

#5171E7 #E75171 #71E751

tetradic

#5171E7 #E751BC #E7C751 #51E77C

square

#5171E7 #E751BC #E7C751 #51E77C

split-complementary

#5171E7 #E77C51 #BCE751

monochromatic

#1736A7 #1E47DC #5171E7 #879DEE #BDC9F6

Accessibility & contrast

On white

4.32

#5171E7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#5171E7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171E7

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171E7	#FFFFFF	#000000	##000000
##5171E7	1.00	4.32	4.87	4.87
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2981EB

Deuteranopia (green-blind)

#0073E5

Tritanopia (blue-blind)

#008DA1

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #5171e7;
/* rgb */ color: rgb(81, 113, 231);
/* oklch */ color: oklch(58.8% 0.182 268.8);

Tailwind

colors: {
  custom: {
    50: '#9199ef',
    500: '#5171e7',
    950: '#000000',
  },
}

SCSS

$custom: #5171e7;
$custom-light: #9199ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5171e7",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 231
  },
  "hsl": {
    "h": 227.2,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.58767,
    "c": 0.1819,
    "h": 268.8
  },
  "luminance": 0.19329
}

Semantic roles & 50–950 ramp

primary

#5171E7

secondary

#E6DAAE

accent

#AD0ED8

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D17

muted

#7E7E85

Preview Lab

Preview with #5171E7

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

Preview Lab → · Contrast checker → · Palette generator →