#5173C8#5173C8

#5173C8 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.1% C 0.137 H 265.8°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#5173C8
RGB	rgb(81, 115, 200)
HSL	hsl(223, 52%, 55%)
HSV	hsv(223, 60%, 78%)
CMYK	cmyk(59.5%, 42.5%, 0%, 21.6%)
CIE-LAB	lab(49.71, 13.88, -47.98)
CIE-LCH	lch(49.71, 49.94, 286.14°)
OKLab	oklab(57.13% -0.01 -0.1366)
OKLCH	oklch(57.13% 0.137 265.8)
XYZ	xyz(19.9458, 18.1793, 57.0902)
Luminance	0.1818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173C8 #C8A651

analogous

#51AFC8 #5173C8 #6A51C8

triadic

#5173C8 #C85173 #73C851

tetradic

#5173C8 #C851AF #C8A651 #51C86A

square

#5173C8 #C851AF #C8A651 #51C86A

split-complementary

#5173C8 #C86A51 #AFC851

monochromatic

#263E79 #3555A7 #5173C8 #8098D7 #AEBEE5

Accessibility & contrast

On white

4.53

#5173C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#5173C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173C8

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173C8	#FFFFFF	#000000	##000000
##5173C8	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D7CCB

Deuteranopia (green-blind)

#3D71C6

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #5173c8;
/* rgb */ color: rgb(81, 115, 200);
/* oklch */ color: oklch(57.1% 0.137 265.8);

Tailwind

colors: {
  custom: {
    50: '#8c9ad9',
    500: '#5173c8',
    950: '#000000',
  },
}

SCSS

$custom: #5173c8;
$custom-light: #8c9ad9;
$custom-dark: #000000;

JSON

{
  "hex": "#5173c8",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 200
  },
  "hsl": {
    "h": 222.857,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.57127,
    "c": 0.13694,
    "h": 265.8
  },
  "luminance": 0.18181
}

Semantic roles & 50–950 ramp

primary

#5173C8

secondary

#D3C5A1

accent

#B34CDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5173C8

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

Preview Lab → · Contrast checker → · Palette generator →