#5173CF#5173CF

#5173CF is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.6% C 0.147 H 266.6°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#5173CF
RGB	rgb(81, 115, 207)
HSL	hsl(224, 57%, 56%)
HSV	hsv(224, 61%, 81%)
CMYK	cmyk(60.9%, 44.4%, 0%, 18.8%)
CIE-LAB	lab(50.11, 16.25, -51.33)
CIE-LCH	lch(50.11, 53.84, 287.57°)
OKLab	oklab(57.57% -0.0088 -0.1464)
OKLCH	oklch(57.57% 0.147 266.6)
XYZ	xyz(20.7827, 18.5140, 61.4977)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173CF #CFAD51

analogous

#51B2CF #5173CF #6E51CF

triadic

#5173CF #CF5173 #73CF51

tetradic

#5173CF #CF51B2 #CFAD51 #51CF6E

square

#5173CF #CF51B2 #CFAD51 #51CF6E

split-complementary

#5173CF #CF6E51 #B2CF51

monochromatic

#243D82 #3154B2 #5173CF #819ADC #B1C0E9

Accessibility & contrast

On white

4.47

#5173CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#5173CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173CF

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173CF	#FFFFFF	#000000	##000000
##5173CF	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#487DD2

Deuteranopia (green-blind)

#3572CD

Tritanopia (blue-blind)

#008897

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5173cf;
/* rgb */ color: rgb(81, 115, 207);
/* oklch */ color: oklch(57.6% 0.147 266.6);

Tailwind

colors: {
  custom: {
    50: '#8d9ade',
    500: '#5173cf',
    950: '#000000',
  },
}

SCSS

$custom: #5173cf;
$custom-light: #8d9ade;
$custom-dark: #000000;

JSON

{
  "hex": "#5173cf",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 207
  },
  "hsl": {
    "h": 223.81,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.57565,
    "c": 0.14669,
    "h": 266.6
  },
  "luminance": 0.18516
}

Semantic roles & 50–950 ramp

primary

#5173CF

secondary

#D8CAA4

accent

#B748E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5173CF

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

Preview Lab → · Contrast checker → · Palette generator →