#5173BD#5173BD

#5173BD is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.121 H 264.2°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#5173BD
RGB	rgb(81, 115, 189)
HSL	hsl(221, 45%, 53%)
HSV	hsv(221, 57%, 74%)
CMYK	cmyk(57.1%, 39.2%, 0%, 25.9%)
CIE-LAB	lab(49.11, 10.19, -42.62)
CIE-LCH	lch(49.11, 43.82, 283.45°)
OKLab	oklab(56.47% -0.0122 -0.1209)
OKLCH	oklch(56.47% 0.121 264.2)
XYZ	xyz(18.7063, 17.6834, 50.5617)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173BD #BD9B51

analogous

#51A9BD #5173BD #6551BD

triadic

#5173BD #BD5173 #73BD51

tetradic

#5173BD #BD51A9 #BD9B51 #51BD65

square

#5173BD #BD51A9 #BD9B51 #51BD65

split-complementary

#5173BD #BD6551 #A9BD51

monochromatic

#293D6B #395797 #5173BD #7D97CE #AABADF

Accessibility & contrast

On white

4.63

#5173BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#5173BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5173BD

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173BD	#FFFFFF	#000000	##FFFFFF
##5173BD	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#547AC0

Deuteranopia (green-blind)

#4670BB

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5173bd;
/* rgb */ color: rgb(81, 115, 189);
/* oklch */ color: oklch(56.5% 0.121 264.2);

Tailwind

colors: {
  custom: {
    50: '#8a9ad1',
    500: '#5173bd',
    950: '#000000',
  },
}

SCSS

$custom: #5173bd;
$custom-light: #8a9ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#5173bd",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 189
  },
  "hsl": {
    "h": 221.111,
    "s": 45,
    "l": 52.941
  },
  "oklch": {
    "l": 0.56466,
    "c": 0.12149,
    "h": 264.2
  },
  "luminance": 0.17685
}

Semantic roles & 50–950 ramp

primary

#5173BD

secondary

#CCBE9E

accent

#AC53D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5173BD

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

Preview Lab → · Contrast checker → · Palette generator →