#5B56CB#5B56CB

#5B56CB is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.3% C 0.176 H 280.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#5B56CB
RGB	rgb(91, 86, 203)
HSL	hsl(243, 53%, 57%)
HSV	hsv(243, 58%, 80%)
CMYK	cmyk(55.2%, 57.6%, 0%, 20.4%)
CIE-LAB	lab(43.05, 34.82, -60.38)
CIE-LCH	lch(43.05, 69.70, 299.97°)
OKLab	oklab(52.32% 0.0315 -0.1731)
OKLCH	oklch(52.32% 0.176 280.3)
XYZ	xyz(18.4183, 13.1903, 58.0638)
Luminance	0.1319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B56CB #C6CB56

analogous

#568CCB #5B56CB #9656CB

triadic

#5B56CB #CB5B56 #56CB5B

tetradic

#5B56CB #CB568C #C6CB56 #56CB96

square

#5B56CB #CB568C #C6CB56 #56CB96

split-complementary

#5B56CB #CB9656 #8CCB56

monochromatic

#2B277F #3B36AE #5B56CB #8885D9 #B6B4E8

Accessibility & contrast

On white

5.77

#5B56CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#5B56CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B56CB

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B56CB	#FFFFFF	#000000	##FFFFFF
##5B56CB	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACF

Deuteranopia (green-blind)

#0061C9

Tritanopia (blue-blind)

#247188

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #5b56cb;
/* rgb */ color: rgb(91, 86, 203);
/* oklch */ color: oklch(52.3% 0.176 280.3);

Tailwind

colors: {
  custom: {
    50: '#9386dc',
    500: '#5b56cb',
    950: '#000000',
  },
}

SCSS

$custom: #5b56cb;
$custom-light: #9386dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5b56cb",
  "rgb": {
    "r": 91,
    "g": 86,
    "b": 203
  },
  "hsl": {
    "h": 242.564,
    "s": 52.941,
    "l": 56.667
  },
  "oklch": {
    "l": 0.52319,
    "c": 0.17593,
    "h": 280.3
  },
  "luminance": 0.13192
}

Semantic roles & 50–950 ramp

primary

#5B56CB

secondary

#D4D6A6

accent

#DC4BD6

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5B56CB

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

Preview Lab → · Contrast checker → · Palette generator →