#5B81F5#5B81F5

#5B81F5 is a light, vivid blue. Relative luminance 0.245; OKLCH L 63.4% C 0.178 H 267.5°. Best body text is #000000 at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#5B81F5
RGB	rgb(91, 129, 245)
HSL	hsl(225, 89%, 66%)
HSV	hsv(225, 63%, 96%)
CMYK	cmyk(62.9%, 47.3%, 0%, 3.9%)
CIE-LAB	lab(56.60, 22.28, -62.24)
CIE-LCH	lch(56.60, 66.11, 289.70°)
OKLab	oklab(63.39% -0.0078 -0.1781)
OKLCH	oklch(63.39% 0.178 267.5)
XYZ	xyz(28.6404, 24.5147, 89.5910)
Luminance	0.2452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81F5 #F5CF5B

analogous

#5BCEF5 #5B81F5 #825BF5

triadic

#5B81F5 #F55B81 #81F55B

tetradic

#5B81F5 #F55BCE #F5CF5B #5BF582

square

#5B81F5 #F55BCE #F5CF5B #5BF582

split-complementary

#5B81F5 #F5825B #CEF55B

monochromatic

#0C3BC9 #2155F1 #5B81F5 #95ADF9 #CEDAFC

Accessibility & contrast

On white

3.56

#5B81F5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.90

#5B81F5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81F5

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81F5	#FFFFFF	#000000	##000000
##5B81F5	1.00	3.56	5.90	5.90
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.90	21.00	1.00	1.00
##000000	5.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#458FF9

Deuteranopia (green-blind)

#2681F3

Tritanopia (blue-blind)

#009CAF

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #5b81f5;
/* rgb */ color: rgb(91, 129, 245);
/* oklch */ color: oklch(63.4% 0.178 267.5);

Tailwind

colors: {
  custom: {
    50: '#97a5f9',
    500: '#5b81f5',
    950: '#000000',
  },
}

SCSS

$custom: #5b81f5;
$custom-light: #97a5f9;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81f5",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 245
  },
  "hsl": {
    "h": 225.195,
    "s": 88.506,
    "l": 65.882
  },
  "oklch": {
    "l": 0.63387,
    "c": 0.17829,
    "h": 267.5
  },
  "luminance": 0.24517
}

Semantic roles & 50–950 ramp

primary

#5B81F5

secondary

#EFE3BC

accent

#AD00E5

background

#FAFAFF

surface

#F3F4FF

border

#CDCED7

text

#0F0F17

muted

#7F7F85

Preview Lab

Preview with #5B81F5

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

Preview Lab → · Contrast checker → · Palette generator →