#5173CA#5173CA

#5173CA is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.3% C 0.140 H 266.1°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#5173CA
RGB	rgb(81, 115, 202)
HSL	hsl(223, 53%, 55%)
HSV	hsv(223, 60%, 79%)
CMYK	cmyk(59.9%, 43.1%, 0%, 20.8%)
CIE-LAB	lab(49.83, 14.56, -48.94)
CIE-LCH	lch(49.83, 51.06, 286.57°)
OKLab	oklab(57.25% -0.0096 -0.1394)
OKLCH	oklch(57.25% 0.14 266.1)
XYZ	xyz(20.1811, 18.2734, 58.3293)
Luminance	0.1827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173CA #CAA851

analogous

#51B0CA #5173CA #6B51CA

triadic

#5173CA #CA5173 #73CA51

tetradic

#5173CA #CA51B0 #CAA851 #51CA6B

square

#5173CA #CA51B0 #CAA851 #51CA6B

split-complementary

#5173CA #CA6B51 #B0CA51

monochromatic

#253E7B #3455AA #5173CA #8099D8 #AFBEE7

Accessibility & contrast

On white

4.51

#5173CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#5173CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173CA

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173CA	#FFFFFF	#000000	##000000
##5173CA	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7CCD

Deuteranopia (green-blind)

#3B71C8

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #5173ca;
/* rgb */ color: rgb(81, 115, 202);
/* oklch */ color: oklch(57.3% 0.140 266.1);

Tailwind

colors: {
  custom: {
    50: '#8c9ada',
    500: '#5173ca',
    950: '#000000',
  },
}

SCSS

$custom: #5173ca;
$custom-light: #8c9ada;
$custom-dark: #000000;

JSON

{
  "hex": "#5173ca",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 202
  },
  "hsl": {
    "h": 223.14,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.57251,
    "c": 0.13973,
    "h": 266.1
  },
  "luminance": 0.18275
}

Semantic roles & 50–950 ramp

primary

#5173CA

secondary

#D5C6A2

accent

#B44BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5173CA

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

Preview Lab → · Contrast checker → · Palette generator →