#5B81EA#5B81EA

#5B81EA is a light, vivid blue. Relative luminance 0.239; OKLCH L 62.7% C 0.163 H 266.7°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#5B81EA
RGB	rgb(91, 129, 234)
HSL	hsl(224, 77%, 64%)
HSV	hsv(224, 61%, 92%)
CMYK	cmyk(61.1%, 44.9%, 0%, 8.2%)
CIE-LAB	lab(55.95, 18.60, -57.17)
CIE-LCH	lch(55.95, 60.12, 288.02°)
OKLab	oklab(62.68% -0.0093 -0.1632)
OKLCH	oklch(62.68% 0.163 266.7)
XYZ	xyz(27.0108, 23.8628, 81.0085)
Luminance	0.2387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81EA #EAC45B

analogous

#5BC8EA #5B81EA #7C5BEA

triadic

#5B81EA #EA5B81 #81EA5B

tetradic

#5B81EA #EA5BC8 #EAC45B #5BEA7C

square

#5B81EA #EA5BC8 #EAC45B #5BEA7C

split-complementary

#5B81EA #EA7C5B #C8EA5B

monochromatic

#1741B4 #2557E3 #5B81EA #91ABF1 #C8D4F8

Accessibility & contrast

On white

3.64

#5B81EA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#5B81EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81EA

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81EA	#FFFFFF	#000000	##000000
##5B81EA	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F8DEE

Deuteranopia (green-blind)

#3880E8

Tritanopia (blue-blind)

#0099AA

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #5b81ea;
/* rgb */ color: rgb(91, 129, 234);
/* oklch */ color: oklch(62.7% 0.163 266.7);

Tailwind

colors: {
  custom: {
    50: '#95a5f1',
    500: '#5b81ea',
    950: '#000000',
  },
}

SCSS

$custom: #5b81ea;
$custom-light: #95a5f1;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81ea",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 234
  },
  "hsl": {
    "h": 224.056,
    "s": 77.297,
    "l": 63.725
  },
  "oklch": {
    "l": 0.62682,
    "c": 0.16349,
    "h": 266.7
  },
  "luminance": 0.23865
}

Semantic roles & 50–950 ramp

primary

#5B81EA

secondary

#EADCB7

accent

#A30CDA

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #5B81EA

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

Preview Lab → · Contrast checker → · Palette generator →