#5173BE#5173BE

#5173BE is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.123 H 264.4°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#5173BE
RGB	rgb(81, 115, 190)
HSL	hsl(221, 46%, 53%)
HSV	hsv(221, 57%, 75%)
CMYK	cmyk(57.4%, 39.5%, 0%, 25.5%)
CIE-LAB	lab(49.16, 10.53, -43.11)
CIE-LCH	lch(49.16, 44.38, 283.72°)
OKLab	oklab(56.53% -0.012 -0.1223)
OKLCH	oklch(56.53% 0.123 264.4)
XYZ	xyz(18.8152, 17.7270, 51.1354)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173BE #BE9C51

analogous

#51AABE #5173BE #6551BE

triadic

#5173BE #BE5173 #73BE51

tetradic

#5173BE #BE51AA #BE9C51 #51BE65

square

#5173BE #BE51AA #BE9C51 #51BE65

split-complementary

#5173BE #BE6551 #AABE51

monochromatic

#283E6C #395799 #5173BE #7E97CF #AABBDF

Accessibility & contrast

On white

4.62

#5173BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#5173BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5173BE

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173BE	#FFFFFF	#000000	##FFFFFF
##5173BE	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#537AC1

Deuteranopia (green-blind)

#4670BC

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5173be;
/* rgb */ color: rgb(81, 115, 190);
/* oklch */ color: oklch(56.5% 0.123 264.4);

Tailwind

colors: {
  custom: {
    50: '#8a9ad2',
    500: '#5173be',
    950: '#000000',
  },
}

SCSS

$custom: #5173be;
$custom-light: #8a9ad2;
$custom-dark: #000000;

JSON

{
  "hex": "#5173be",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 190
  },
  "hsl": {
    "h": 221.284,
    "s": 45.607,
    "l": 53.137
  },
  "oklch": {
    "l": 0.56525,
    "c": 0.1229,
    "h": 264.4
  },
  "luminance": 0.17729
}

Semantic roles & 50–950 ramp

primary

#5173BE

secondary

#CDBE9E

accent

#AC53D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5173BE

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

Preview Lab → · Contrast checker → · Palette generator →