#5173E9#5173E9

#5173E9 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.3% C 0.182 H 268.3°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#5173E9
RGB	rgb(81, 115, 233)
HSL	hsl(227, 78%, 62%)
HSV	hsv(227, 65%, 91%)
CMYK	cmyk(65.2%, 50.6%, 0%, 8.6%)
CIE-LAB	lab(51.71, 25.15, -63.45)
CIE-LCH	lch(51.71, 68.25, 291.62°)
OKLab	oklab(59.3% -0.0054 -0.1821)
OKLCH	oklch(59.3% 0.182 268.3)
XYZ	xyz(24.2270, 19.8917, 79.6377)
Luminance	0.1989 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173E9 #E9C751

analogous

#51BFE9 #5173E9 #7B51E9

triadic

#5173E9 #E95173 #73E951

tetradic

#5173E9 #E951BF #E9C751 #51E97B

square

#5173E9 #E951BF #E9C751 #51E97B

split-complementary

#5173E9 #E97B51 #BFE951

monochromatic

#1637AA #1C48E0 #5173E9 #879FF0 #BECAF7

Accessibility & contrast

On white

4.22

#5173E9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#5173E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173E9

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173E9	#FFFFFF	#000000	##000000
##5173E9	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D82ED

Deuteranopia (green-blind)

#0075E7

Tritanopia (blue-blind)

#008FA3

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #5173e9;
/* rgb */ color: rgb(81, 115, 233);
/* oklch */ color: oklch(59.3% 0.182 268.3);

Tailwind

colors: {
  custom: {
    50: '#919af1',
    500: '#5173e9',
    950: '#000000',
  },
}

SCSS

$custom: #5173e9;
$custom-light: #919af1;
$custom-dark: #000000;

JSON

{
  "hex": "#5173e9",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 233
  },
  "hsl": {
    "h": 226.579,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.59299,
    "c": 0.18214,
    "h": 268.3
  },
  "luminance": 0.19894
}

Semantic roles & 50–950 ramp

primary

#5173E9

secondary

#E7DBAF

accent

#AC0CDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #5173E9

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

Preview Lab → · Contrast checker → · Palette generator →