#5173DD#5173DD

#5173DD is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.5% C 0.166 H 267.7°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#5173DD
RGB	rgb(81, 115, 221)
HSL	hsl(225, 67%, 59%)
HSV	hsv(225, 63%, 87%)
CMYK	cmyk(63.3%, 48%, 0%, 13.3%)
CIE-LAB	lab(50.95, 21.03, -57.92)
CIE-LCH	lch(50.95, 61.62, 289.96°)
OKLab	oklab(58.48% -0.0067 -0.1658)
OKLCH	oklch(58.48% 0.166 267.7)
XYZ	xyz(22.5708, 19.2292, 70.9148)
Luminance	0.1923 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173DD #DDBB51

analogous

#51B9DD #5173DD #7551DD

triadic

#5173DD #DD5173 #73DD51

tetradic

#5173DD #DD51B9 #DDBB51 #51DD75

square

#5173DD #DD51B9 #DDBB51 #51DD75

split-complementary

#5173DD #DD7551 #B9DD51

monochromatic

#1D3B96 #274FC9 #5173DD #849CE7 #B7C5F1

Accessibility & contrast

On white

4.33

#5173DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#5173DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173DD

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173DD	#FFFFFF	#000000	##000000
##5173DD	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C80E1

Deuteranopia (green-blind)

#1E73DB

Tritanopia (blue-blind)

#008B9D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5173dd;
/* rgb */ color: rgb(81, 115, 221);
/* oklch */ color: oklch(58.5% 0.166 267.7);

Tailwind

colors: {
  custom: {
    50: '#8f9ae8',
    500: '#5173dd',
    950: '#000000',
  },
}

SCSS

$custom: #5173dd;
$custom-light: #8f9ae8;
$custom-dark: #000000;

JSON

{
  "hex": "#5173dd",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 221
  },
  "hsl": {
    "h": 225.429,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.58478,
    "c": 0.16595,
    "h": 267.7
  },
  "luminance": 0.19231
}

Semantic roles & 50–950 ramp

primary

#5173DD

secondary

#E0D3AA

accent

#C03EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #5173DD

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

Preview Lab → · Contrast checker → · Palette generator →