#5B5BDD#5B5BDD

#5B5BDD is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.6% C 0.193 H 277.9°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#5B5BDD
RGB	rgb(91, 91, 221)
HSL	hsl(240, 66%, 61%)
HSV	hsv(240, 59%, 87%)
CMYK	cmyk(58.8%, 58.8%, 0%, 13.3%)
CIE-LAB	lab(45.53, 37.54, -66.66)
CIE-LCH	lch(45.53, 76.50, 299.39°)
OKLab	oklab(54.57% 0.0265 -0.1915)
OKLCH	oklch(54.57% 0.193 277.9)
XYZ	xyz(21.1024, 14.9252, 70.1614)
Luminance	0.1493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B5BDD #DDDD5B

analogous

#5B9CDD #5B5BDD #9C5BDD

triadic

#5B5BDD #DD5B5B #5BDD5B

tetradic

#5B5BDD #DD5B9C #DDDD5B #5BDD9C

square

#5B5BDD #DD5B9C #DDDD5B #5BDD9C

split-complementary

#5B5BDD #DD9C5B #9CDD5B

monochromatic

#21219D #2B2BD0 #5B5BDD #8E8EE8 #C0C0F2

Accessibility & contrast

On white

5.27

#5B5BDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#5B5BDD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B5BDD

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B5BDD	#FFFFFF	#000000	##FFFFFF
##5B5BDD	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071E1

Deuteranopia (green-blind)

#0066DA

Tritanopia (blue-blind)

#007A93

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5b5bdd;
/* rgb */ color: rgb(91, 91, 221);
/* oklch */ color: oklch(54.6% 0.193 277.9);

Tailwind

colors: {
  custom: {
    50: '#9589e8',
    500: '#5b5bdd',
    950: '#000000',
  },
}

SCSS

$custom: #5b5bdd;
$custom-light: #9589e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5b5bdd",
  "rgb": {
    "r": 91,
    "g": 91,
    "b": 221
  },
  "hsl": {
    "h": 240,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.54565,
    "c": 0.19334,
    "h": 277.9
  },
  "luminance": 0.14927
}

Semantic roles & 50–950 ramp

primary

#5B5BDD

secondary

#E2E2B1

accent

#CE18CE

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #5B5BDD

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

Preview Lab → · Contrast checker → · Palette generator →