#5173BC#5173BC

#5173BC is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.4% C 0.120 H 264.1°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#5173BC
RGB	rgb(81, 115, 188)
HSL	hsl(221, 44%, 53%)
HSV	hsv(221, 57%, 74%)
CMYK	cmyk(56.9%, 38.8%, 0%, 26.3%)
CIE-LAB	lab(49.06, 9.86, -42.13)
CIE-LCH	lch(49.06, 43.26, 283.17°)
OKLab	oklab(56.41% -0.0124 -0.1194)
OKLCH	oklch(56.41% 0.12 264.1)
XYZ	xyz(18.5981, 17.6402, 49.9920)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173BC #BC9A51

analogous

#51A8BC #5173BC #6551BC

triadic

#5173BC #BC5173 #73BC51

tetradic

#5173BC #BC51A8 #BC9A51 #51BC65

square

#5173BC #BC51A8 #BC9A51 #51BC65

split-complementary

#5173BC #BC6551 #A8BC51

monochromatic

#293D6A #3A5796 #5173BC #7D97CD #A9BADE

Accessibility & contrast

On white

4.64

#5173BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#5173BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5173BC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#557ABF

Deuteranopia (green-blind)

#4770BA

Tritanopia (blue-blind)

#01838E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5173bc;
/* rgb */ color: rgb(81, 115, 188);
/* oklch */ color: oklch(56.4% 0.120 264.1);

Tailwind

colors: {
  custom: {
    50: '#8a9ad0',
    500: '#5173bc',
    950: '#000000',
  },
}

SCSS

$custom: #5173bc;
$custom-light: #8a9ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#5173bc",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 188
  },
  "hsl": {
    "h": 220.935,
    "s": 44.398,
    "l": 52.745
  },
  "oklch": {
    "l": 0.56407,
    "c": 0.12008,
    "h": 264.1
  },
  "luminance": 0.17642
}

Semantic roles & 50–950 ramp

primary

#5173BC

secondary

#CCBD9D

accent

#AB54D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5173BC

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

Preview Lab → · Contrast checker → · Palette generator →