#5B59CB#5B59CB

#5B59CB is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.9% C 0.172 H 279.5°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#5B59CB
RGB	rgb(91, 89, 203)
HSL	hsl(241, 52%, 57%)
HSV	hsv(241, 56%, 80%)
CMYK	cmyk(55.2%, 56.2%, 0%, 20.4%)
CIE-LAB	lab(43.77, 32.99, -59.21)
CIE-LCH	lch(43.77, 67.78, 299.12°)
OKLab	oklab(52.85% 0.0285 -0.1696)
OKLCH	oklch(52.85% 0.172 279.5)
XYZ	xyz(18.6629, 13.6795, 58.1453)
Luminance	0.1368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B59CB #C9CB59

analogous

#5990CB #5B59CB #9459CB

triadic

#5B59CB #CB5B59 #59CB5B

tetradic

#5B59CB #CB5990 #C9CB59 #59CB94

square

#5B59CB #CB5990 #C9CB59 #59CB94

split-complementary

#5B59CB #CB9459 #90CB59

monochromatic

#2A2881 #3937B0 #5B59CB #8988DA #B7B6E8

Accessibility & contrast

On white

5.62

#5B59CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#5B59CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B59CB

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B59CB	#FFFFFF	#000000	##FFFFFF
##5B59CB	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CCF

Deuteranopia (green-blind)

#0063C9

Tritanopia (blue-blind)

#237389

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #5b59cb;
/* rgb */ color: rgb(91, 89, 203);
/* oklch */ color: oklch(52.9% 0.172 279.5);

Tailwind

colors: {
  custom: {
    50: '#9388dc',
    500: '#5b59cb',
    950: '#000000',
  },
}

SCSS

$custom: #5b59cb;
$custom-light: #9388dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5b59cb",
  "rgb": {
    "r": 91,
    "g": 89,
    "b": 203
  },
  "hsl": {
    "h": 241.053,
    "s": 52.294,
    "l": 57.255
  },
  "oklch": {
    "l": 0.52854,
    "c": 0.172,
    "h": 279.5
  },
  "luminance": 0.13681
}

Semantic roles & 50–950 ramp

primary

#5B59CB

secondary

#D6D7A9

accent

#DC4CD9

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5B59CB

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

Preview Lab → · Contrast checker → · Palette generator →