#5B73CB#5B73CB

#5B73CB is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.9% C 0.138 H 270.2°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#5B73CB
RGB	rgb(91, 115, 203)
HSL	hsl(227, 52%, 58%)
HSV	hsv(227, 55%, 80%)
CMYK	cmyk(55.2%, 43.3%, 0%, 20.4%)
CIE-LAB	lab(50.45, 16.92, -48.49)
CIE-LCH	lch(50.45, 51.35, 289.23°)
OKLab	oklab(57.9% 0.0004 -0.1379)
OKLCH	oklch(57.9% 0.138 270.2)
XYZ	xyz(21.2211, 18.7959, 58.9980)
Luminance	0.1880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B73CB #CBB35B

analogous

#5BABCB #5B73CB #7B5BCB

triadic

#5B73CB #CB5B73 #73CB5B

tetradic

#5B73CB #CB5BAB #CBB35B #5BCB7B

square

#5B73CB #CB5BAB #CBB35B #5BCB7B

split-complementary

#5B73CB #CB7B5B #ABCB5B

monochromatic

#293C82 #3852B1 #5B73CB #899BDA #B8C2E8

Accessibility & contrast

On white

4.41

#5B73CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#5B73CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B73CB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B73CB	#FFFFFF	#000000	##000000
##5B73CB	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D7DCE

Deuteranopia (green-blind)

#3F73C9

Tritanopia (blue-blind)

#1C8695

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #5b73cb;
/* rgb */ color: rgb(91, 115, 203);
/* oklch */ color: oklch(57.9% 0.138 270.2);

Tailwind

colors: {
  custom: {
    50: '#919bdb',
    500: '#5b73cb',
    950: '#000000',
  },
}

SCSS

$custom: #5b73cb;
$custom-light: #919bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#5b73cb",
  "rgb": {
    "r": 91,
    "g": 115,
    "b": 203
  },
  "hsl": {
    "h": 227.143,
    "s": 51.852,
    "l": 57.647
  },
  "oklch": {
    "l": 0.57896,
    "c": 0.13787,
    "h": 270.2
  },
  "luminance": 0.18797
}

Semantic roles & 50–950 ramp

primary

#5B73CB

secondary

#D7CEAA

accent

#BD4CDB

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5B73CB

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

Preview Lab → · Contrast checker → · Palette generator →