#5B5BBD#5B5BBD

#5B5BBD is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.2% C 0.150 H 279.9°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#5B5BBD
RGB	rgb(91, 91, 189)
HSL	hsl(240, 43%, 55%)
HSV	hsv(240, 52%, 74%)
CMYK	cmyk(51.9%, 51.9%, 0%, 25.9%)
CIE-LAB	lab(43.33, 27.29, -51.81)
CIE-LCH	lch(43.33, 58.56, 297.78°)
OKLab	oklab(52.23% 0.0257 -0.1478)
OKLCH	oklch(52.23% 0.15 279.9)
XYZ	xyz(17.2379, 13.3794, 49.8084)
Luminance	0.1338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B5BBD #BDBD5B

analogous

#5B8CBD #5B5BBD #8C5BBD

triadic

#5B5BBD #BD5B5B #5BBD5B

tetradic

#5B5BBD #BD5B8C #BDBD5B #5BBD8C

square

#5B5BBD #BD5B8C #BDBD5B #5BBD8C

split-complementary

#5B5BBD #BD8C5B #8CBD5B

monochromatic

#2D2D70 #3F3F9C #5B5BBD #8787CF #B2B2E0

Accessibility & contrast

On white

5.71

#5B5BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#5B5BBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B5BBD

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B5BBD	#FFFFFF	#000000	##FFFFFF
##5B5BBD	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#296AC0

Deuteranopia (green-blind)

#1D63BB

Tritanopia (blue-blind)

#327183

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #5b5bbd;
/* rgb */ color: rgb(91, 91, 189);
/* oklch */ color: oklch(52.2% 0.150 279.9);

Tailwind

colors: {
  custom: {
    50: '#9089d1',
    500: '#5b5bbd',
    950: '#000000',
  },
}

SCSS

$custom: #5b5bbd;
$custom-light: #9089d1;
$custom-dark: #000000;

JSON

{
  "hex": "#5b5bbd",
  "rgb": {
    "r": 91,
    "g": 91,
    "b": 189
  },
  "hsl": {
    "h": 240,
    "s": 42.609,
    "l": 54.902
  },
  "oklch": {
    "l": 0.52227,
    "c": 0.15007,
    "h": 279.9
  },
  "luminance": 0.1338
}

Semantic roles & 50–950 ramp

primary

#5B5BBD

secondary

#CFCFA5

accent

#D255D2

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #5B5BBD

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

Preview Lab → · Contrast checker → · Palette generator →