#5B59BB#5B59BB

#5B59BB is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.7% C 0.150 H 280.7°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#5B59BB
RGB	rgb(91, 89, 187)
HSL	hsl(241, 42%, 54%)
HSV	hsv(241, 52%, 73%)
CMYK	cmyk(51.3%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(42.70, 27.90, -51.66)
CIE-LCH	lch(42.70, 58.72, 298.37°)
OKLab	oklab(51.71% 0.0278 -0.1474)
OKLCH	oklch(51.71% 0.15 280.7)
XYZ	xyz(16.8536, 12.9558, 48.6167)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B59BB #B9BB59

analogous

#5988BB #5B59BB #8C59BB

triadic

#5B59BB #BB5B59 #59BB5B

tetradic

#5B59BB #BB5988 #B9BB59 #59BB8C

square

#5B59BB #BB5988 #B9BB59 #59BB8C

split-complementary

#5B59BB #BB8C59 #88BB59

monochromatic

#2E2D6D #403E98 #5B59BB #8684CD #B1B0DF

Accessibility & contrast

On white

5.85

#5B59BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#5B59BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B59BB

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B59BB	#FFFFFF	#000000	##FFFFFF
##5B59BB	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2668BE

Deuteranopia (green-blind)

#1B61B9

Tritanopia (blue-blind)

#346F81

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #5b59bb;
/* rgb */ color: rgb(91, 89, 187);
/* oklch */ color: oklch(51.7% 0.150 280.7);

Tailwind

colors: {
  custom: {
    50: '#9088d0',
    500: '#5b59bb',
    950: '#000000',
  },
}

SCSS

$custom: #5b59bb;
$custom-light: #9088d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5b59bb",
  "rgb": {
    "r": 91,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 241.224,
    "s": 41.88,
    "l": 54.118
  },
  "oklch": {
    "l": 0.51711,
    "c": 0.15004,
    "h": 280.7
  },
  "luminance": 0.12957
}

Semantic roles & 50–950 ramp

primary

#5B59BB

secondary

#CCCDA3

accent

#D256CF

background

#F9F8FC

surface

#F2EFF9

border

#CCCAD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #5B59BB

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

Preview Lab → · Contrast checker → · Palette generator →