#5171E9#5171E9

#5171E9 is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.9% C 0.185 H 268.9°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#5171E9
RGB	rgb(81, 113, 233)
HSL	hsl(227, 78%, 62%)
HSV	hsv(227, 65%, 91%)
CMYK	cmyk(65.2%, 51.5%, 0%, 8.6%)
CIE-LAB	lab(51.20, 26.39, -64.28)
CIE-LCH	lch(51.20, 69.49, 292.32°)
OKLab	oklab(58.91% -0.0036 -0.1845)
OKLCH	oklch(58.91% 0.185 268.9)
XYZ	xyz(24.0014, 19.4406, 79.5625)
Luminance	0.1944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171E9 #E9C951

analogous

#51BDE9 #5171E9 #7D51E9

triadic

#5171E9 #E95171 #71E951

tetradic

#5171E9 #E951BD #E9C951 #51E97D

square

#5171E9 #E951BD #E9C951 #51E97D

split-complementary

#5171E9 #E97D51 #BDE951

monochromatic

#1635AA #1C46E0 #5171E9 #879DF0 #BECAF7

Accessibility & contrast

On white

4.30

#5171E9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#5171E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171E9

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171E9	#FFFFFF	#000000	##000000
##5171E9	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2681ED

Deuteranopia (green-blind)

#0073E7

Tritanopia (blue-blind)

#008DA2

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #5171e9;
/* rgb */ color: rgb(81, 113, 233);
/* oklch */ color: oklch(58.9% 0.185 268.9);

Tailwind

colors: {
  custom: {
    50: '#9199f1',
    500: '#5171e9',
    950: '#000000',
  },
}

SCSS

$custom: #5171e9;
$custom-light: #9199f1;
$custom-dark: #000000;

JSON

{
  "hex": "#5171e9",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 233
  },
  "hsl": {
    "h": 227.368,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.58908,
    "c": 0.18458,
    "h": 268.9
  },
  "luminance": 0.19443
}

Semantic roles & 50–950 ramp

primary

#5171E9

secondary

#E7DBAF

accent

#AE0CDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D17

muted

#7E7E85

Preview Lab

Preview with #5171E9

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

Preview Lab → · Contrast checker → · Palette generator →