#5B81DD#5B81DD

#5B81DD is a mid, vivid blue. Relative luminance 0.231; OKLCH L 61.9% C 0.146 H 265.5°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#5B81DD
RGB	rgb(91, 129, 221)
HSL	hsl(222, 66%, 61%)
HSV	hsv(222, 59%, 87%)
CMYK	cmyk(58.8%, 41.6%, 0%, 13.3%)
CIE-LAB	lab(55.22, 14.28, -51.07)
CIE-LCH	lch(55.22, 53.03, 285.62°)
OKLab	oklab(61.88% -0.0115 -0.1453)
OKLCH	oklch(61.88% 0.146 265.5)
XYZ	xyz(25.2113, 23.1430, 71.5311)
Luminance	0.2314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81DD #DDB75B

analogous

#5BC2DD #5B81DD #765BDD

triadic

#5B81DD #DD5B81 #81DD5B

tetradic

#5B81DD #DD5BC2 #DDB75B #5BDD76

square

#5B81DD #DD5BC2 #DDB75B #5BDD76

split-complementary

#5B81DD #DD765B #C2DD5B

monochromatic

#21459D #2B5BD0 #5B81DD #8EA8E8 #C0CFF2

Accessibility & contrast

On white

3.73

#5B81DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#5B81DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81DD

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81DD	#FFFFFF	#000000	##000000
##5B81DD	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#598BE1

Deuteranopia (green-blind)

#477FDB

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #5b81dd;
/* rgb */ color: rgb(91, 129, 221);
/* oklch */ color: oklch(61.9% 0.146 265.5);

Tailwind

colors: {
  custom: {
    50: '#93a5e8',
    500: '#5b81dd',
    950: '#000000',
  },
}

SCSS

$custom: #5b81dd;
$custom-light: #93a5e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81dd",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 221
  },
  "hsl": {
    "h": 222.462,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.61884,
    "c": 0.14577,
    "h": 265.5
  },
  "luminance": 0.23145
}

Semantic roles & 50–950 ramp

primary

#5B81DD

secondary

#E2D4B1

accent

#9818CE

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5B81DD

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

Preview Lab → · Contrast checker → · Palette generator →