#5B81FC#5B81FC

#5B81FC is a light, vivid blue. Relative luminance 0.250; OKLCH L 63.8% C 0.188 H 267.9°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#5B81FC
RGB	rgb(91, 129, 252)
HSL	hsl(226, 96%, 67%)
HSV	hsv(226, 64%, 99%)
CMYK	cmyk(63.9%, 48.8%, 0%, 1.2%)
CIE-LAB	lab(57.03, 24.63, -65.42)
CIE-LCH	lch(57.03, 69.90, 290.63°)
OKLab	oklab(63.85% -0.0069 -0.1875)
OKLCH	oklch(63.85% 0.188 267.9)
XYZ	xyz(29.7293, 24.9502, 95.3257)
Luminance	0.2495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81FC #FCD65B

analogous

#5BD1FC #5B81FC #865BFC

triadic

#5B81FC #FC5B81 #81FC5B

tetradic

#5B81FC #FC5BD1 #FCD65B #5BFC86

square

#5B81FC #FC5BD1 #FCD65B #5BFC86

split-complementary

#5B81FC #FC865B #D1FC5B

monochromatic

#0436D9 #1F53FB #5B81FC #97AFFD #D3DDFE

Accessibility & contrast

On white

3.51

#5B81FC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#5B81FC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81FC

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81FC	#FFFFFF	#000000	##000000
##5B81FC	1.00	3.51	5.99	5.99
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E91FF

Deuteranopia (green-blind)

#1182F9

Tritanopia (blue-blind)

#009EB3

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #5b81fc;
/* rgb */ color: rgb(91, 129, 252);
/* oklch */ color: oklch(63.8% 0.188 267.9);

Tailwind

colors: {
  custom: {
    50: '#98a5fe',
    500: '#5b81fc',
    950: '#000000',
  },
}

SCSS

$custom: #5b81fc;
$custom-light: #98a5fe;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81fc",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 252
  },
  "hsl": {
    "h": 225.839,
    "s": 96.407,
    "l": 67.255
  },
  "oklch": {
    "l": 0.63849,
    "c": 0.1876,
    "h": 267.9
  },
  "luminance": 0.24953
}

Semantic roles & 50–950 ramp

primary

#5B81FC

secondary

#F3E7C0

accent

#AF00E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F0F18

muted

#7F7F86

Preview Lab

Preview with #5B81FC

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

Preview Lab → · Contrast checker → · Palette generator →