#5B5BBF#5B5BBF

#5B5BBF is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.4% C 0.153 H 279.7°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#5B5BBF
RGB	rgb(91, 91, 191)
HSL	hsl(240, 44%, 55%)
HSV	hsv(240, 52%, 75%)
CMYK	cmyk(52.4%, 52.4%, 0%, 25.1%)
CIE-LAB	lab(43.46, 27.93, -52.77)
CIE-LCH	lch(43.46, 59.70, 297.89°)
OKLab	oklab(52.36% 0.0258 -0.1507)
OKLCH	oklch(52.36% 0.153 279.7)
XYZ	xyz(17.4565, 13.4669, 50.9596)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B5BBF #BFBF5B

analogous

#5B8DBF #5B5BBF #8D5BBF

triadic

#5B5BBF #BF5B5B #5BBF5B

tetradic

#5B5BBF #BF5B8D #BFBF5B #5BBF8D

square

#5B5BBF #BF5B8D #BFBF5B #5BBF8D

split-complementary

#5B5BBF #BF8D5B #8DBF5B

monochromatic

#2D2D73 #3E3E9F #5B5BBF #8787D0 #B3B3E1

Accessibility & contrast

On white

5.69

#5B5BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#5B5BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B5BBF

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B5BBF	#FFFFFF	#000000	##FFFFFF
##5B5BBF	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#266BC3

Deuteranopia (green-blind)

#1963BD

Tritanopia (blue-blind)

#317184

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #5b5bbf;
/* rgb */ color: rgb(91, 91, 191);
/* oklch */ color: oklch(52.4% 0.153 279.7);

Tailwind

colors: {
  custom: {
    50: '#9189d3',
    500: '#5b5bbf',
    950: '#000000',
  },
}

SCSS

$custom: #5b5bbf;
$custom-light: #9189d3;
$custom-dark: #000000;

JSON

{
  "hex": "#5b5bbf",
  "rgb": {
    "r": 91,
    "g": 91,
    "b": 191
  },
  "hsl": {
    "h": 240,
    "s": 43.86,
    "l": 55.294
  },
  "oklch": {
    "l": 0.52365,
    "c": 0.15286,
    "h": 279.7
  },
  "luminance": 0.13468
}

Semantic roles & 50–950 ramp

primary

#5B5BBF

secondary

#D0D0A6

accent

#D454D4

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0D0B14

muted

#7E7C83

Preview Lab

Preview with #5B5BBF

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

Preview Lab → · Contrast checker → · Palette generator →