#5173CE#5173CE

#5173CE is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.5% C 0.145 H 266.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#5173CE
RGB	rgb(81, 115, 206)
HSL	hsl(224, 56%, 56%)
HSV	hsv(224, 61%, 81%)
CMYK	cmyk(60.7%, 44.2%, 0%, 19.2%)
CIE-LAB	lab(50.06, 15.91, -50.86)
CIE-LCH	lch(50.06, 53.29, 287.37°)
OKLab	oklab(57.5% -0.0089 -0.145)
OKLCH	oklch(57.5% 0.145 266.5)
XYZ	xyz(20.6608, 18.4653, 60.8559)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173CE #CEAC51

analogous

#51B2CE #5173CE #6E51CE

triadic

#5173CE #CE5173 #73CE51

tetradic

#5173CE #CE51B2 #CEAC51 #51CE6E

square

#5173CE #CE51B2 #CEAC51 #51CE6E

split-complementary

#5173CE #CE6E51 #B2CE51

monochromatic

#243D80 #3254B0 #5173CE #8199DB #B1C0E9

Accessibility & contrast

On white

4.47

#5173CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#5173CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173CE

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173CE	#FFFFFF	#000000	##000000
##5173CE	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#497DD1

Deuteranopia (green-blind)

#3672CC

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5173ce;
/* rgb */ color: rgb(81, 115, 206);
/* oklch */ color: oklch(57.5% 0.145 266.5);

Tailwind

colors: {
  custom: {
    50: '#8c9add',
    500: '#5173ce',
    950: '#000000',
  },
}

SCSS

$custom: #5173ce;
$custom-light: #8c9add;
$custom-dark: #000000;

JSON

{
  "hex": "#5173ce",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 206
  },
  "hsl": {
    "h": 223.68,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.57501,
    "c": 0.1453,
    "h": 266.5
  },
  "luminance": 0.18467
}

Semantic roles & 50–950 ramp

primary

#5173CE

secondary

#D7C9A4

accent

#B648DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5173CE

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

Preview Lab → · Contrast checker → · Palette generator →