#5173DB#5173DB

#5173DB is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.3% C 0.163 H 267.5°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#5173DB
RGB	rgb(81, 115, 219)
HSL	hsl(225, 66%, 59%)
HSV	hsv(225, 63%, 86%)
CMYK	cmyk(63%, 47.5%, 0%, 14.1%)
CIE-LAB	lab(50.83, 20.35, -56.99)
CIE-LCH	lch(50.83, 60.52, 289.65°)
OKLab	oklab(58.34% -0.007 -0.1631)
OKLCH	oklch(58.34% 0.163 267.5)
XYZ	xyz(22.3059, 19.1233, 69.5198)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173DB #DBB951

analogous

#51B8DB #5173DB #7451DB

triadic

#5173DB #DB5173 #73DB51

tetradic

#5173DB #DB51B8 #DBB951 #51DB74

square

#5173DB #DB51B8 #DBB951 #51DB74

split-complementary

#5173DB #DB7451 #B8DB51

monochromatic

#1E3B93 #2950C6 #5173DB #849CE5 #B6C5F0

Accessibility & contrast

On white

4.35

#5173DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#5173DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5173DB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173DB	#FFFFFF	#000000	##000000
##5173DB	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E80DF

Deuteranopia (green-blind)

#2273D9

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5173db;
/* rgb */ color: rgb(81, 115, 219);
/* oklch */ color: oklch(58.3% 0.163 267.5);

Tailwind

colors: {
  custom: {
    50: '#8f9ae7',
    500: '#5173db',
    950: '#000000',
  },
}

SCSS

$custom: #5173db;
$custom-light: #8f9ae7;
$custom-dark: #000000;

JSON

{
  "hex": "#5173db",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 219
  },
  "hsl": {
    "h": 225.217,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.58344,
    "c": 0.16322,
    "h": 267.5
  },
  "luminance": 0.19125
}

Semantic roles & 50–950 ramp

primary

#5173DB

secondary

#DFD2A9

accent

#BF3FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #5173DB

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

Preview Lab → · Contrast checker → · Palette generator →