#5B73CF#5B73CF

#5B73CF is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.1% C 0.143 H 270.4°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#5B73CF
RGB	rgb(91, 115, 207)
HSL	hsl(228, 55%, 58%)
HSV	hsv(228, 56%, 81%)
CMYK	cmyk(56%, 44.4%, 0%, 18.8%)
CIE-LAB	lab(50.67, 18.22, -50.40)
CIE-LCH	lch(50.67, 53.60, 289.88°)
OKLab	oklab(58.14% 0.0011 -0.1435)
OKLCH	oklch(58.14% 0.144 270.4)
XYZ	xyz(21.7039, 18.9890, 61.5409)
Luminance	0.1899 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B73CF #CFB75B

analogous

#5BADCF #5B73CF #7D5BCF

triadic

#5B73CF #CF5B73 #73CF5B

tetradic

#5B73CF #CF5BAD #CFB75B #5BCF7D

square

#5B73CF #CF5BAD #CFB75B #5BCF7D

split-complementary

#5B73CF #CF7D5B #ADCF5B

monochromatic

#283C88 #3650B7 #5B73CF #8A9BDD #BAC4EB

Accessibility & contrast

On white

4.38

#5B73CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#5B73CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B73CF

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B73CF	#FFFFFF	#000000	##000000
##5B73CF	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7ED2

Deuteranopia (green-blind)

#3B74CD

Tritanopia (blue-blind)

#138797

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5b73cf;
/* rgb */ color: rgb(91, 115, 207);
/* oklch */ color: oklch(58.1% 0.143 270.4);

Tailwind

colors: {
  custom: {
    50: '#929ade',
    500: '#5b73cf',
    950: '#000000',
  },
}

SCSS

$custom: #5b73cf;
$custom-light: #929ade;
$custom-dark: #000000;

JSON

{
  "hex": "#5b73cf",
  "rgb": {
    "r": 91,
    "g": 115,
    "b": 207
  },
  "hsl": {
    "h": 227.586,
    "s": 54.717,
    "l": 58.431
  },
  "oklch": {
    "l": 0.58143,
    "c": 0.1435,
    "h": 270.4
  },
  "luminance": 0.18991
}

Semantic roles & 50–950 ramp

primary

#5B73CF

secondary

#DAD0AC

accent

#BF4ADE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #5B73CF

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

Preview Lab → · Contrast checker → · Palette generator →