#5173BF#5173BF

#5173BF is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.6% C 0.124 H 264.6°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#5173BF
RGB	rgb(81, 115, 191)
HSL	hsl(221, 46%, 53%)
HSV	hsv(221, 58%, 75%)
CMYK	cmyk(57.6%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(49.22, 10.86, -43.60)
CIE-LCH	lch(49.22, 44.93, 283.99°)
OKLab	oklab(56.58% -0.0118 -0.1237)
OKLCH	oklch(56.58% 0.124 264.6)
XYZ	xyz(18.9248, 17.7709, 51.7129)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173BF #BF9D51

analogous

#51AABF #5173BF #6651BF

triadic

#5173BF #BF5173 #73BF51

tetradic

#5173BF #BF51AA #BF9D51 #51BF66

square

#5173BF #BF51AA #BF9D51 #51BF66

split-complementary

#5173BF #BF6651 #AABF51

monochromatic

#283E6D #39579A #5173BF #7E97CF #AABBE0

Accessibility & contrast

On white

4.61

#5173BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#5173BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5173BF

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173BF	#FFFFFF	#000000	##FFFFFF
##5173BF	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#537AC2

Deuteranopia (green-blind)

#4570BD

Tritanopia (blue-blind)

#008490

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5173bf;
/* rgb */ color: rgb(81, 115, 191);
/* oklch */ color: oklch(56.6% 0.124 264.6);

Tailwind

colors: {
  custom: {
    50: '#8a9ad3',
    500: '#5173bf',
    950: '#000000',
  },
}

SCSS

$custom: #5173bf;
$custom-light: #8a9ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#5173bf",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 221.455,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.56584,
    "c": 0.12431,
    "h": 264.6
  },
  "luminance": 0.17772
}

Semantic roles & 50–950 ramp

primary

#5173BF

secondary

#CEBF9E

accent

#AD52D6

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5173BF

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

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