#5B81DF#5B81DF

#5B81DF is a light, vivid blue. Relative luminance 0.233; OKLCH L 62.0% C 0.148 H 265.7°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#5B81DF
RGB	rgb(91, 129, 223)
HSL	hsl(223, 67%, 62%)
HSV	hsv(223, 59%, 87%)
CMYK	cmyk(59.2%, 42.2%, 0%, 12.5%)
CIE-LAB	lab(55.33, 14.94, -52.02)
CIE-LCH	lch(55.33, 54.12, 286.03°)
OKLab	oklab(62% -0.0112 -0.1481)
OKLCH	oklch(62% 0.149 265.7)
XYZ	xyz(25.4794, 23.2502, 72.9428)
Luminance	0.2325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81DF #DFB95B

analogous

#5BC3DF #5B81DF #775BDF

triadic

#5B81DF #DF5B81 #81DF5B

tetradic

#5B81DF #DF5BC3 #DFB95B #5BDF77

square

#5B81DF #DF5BC3 #DFB95B #5BDF77

split-complementary

#5B81DF #DF775B #C3DF5B

monochromatic

#1F44A0 #295AD4 #5B81DF #8EA8E9 #C1D0F3

Accessibility & contrast

On white

3.72

#5B81DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#5B81DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81DF

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81DF	#FFFFFF	#000000	##000000
##5B81DF	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#578BE3

Deuteranopia (green-blind)

#457FDD

Tritanopia (blue-blind)

#0096A5

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #5b81df;
/* rgb */ color: rgb(91, 129, 223);
/* oklch */ color: oklch(62.0% 0.148 265.7);

Tailwind

colors: {
  custom: {
    50: '#94a5e9',
    500: '#5b81df',
    950: '#000000',
  },
}

SCSS

$custom: #5b81df;
$custom-light: #94a5e9;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81df",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 223
  },
  "hsl": {
    "h": 222.727,
    "s": 67.347,
    "l": 61.569
  },
  "oklch": {
    "l": 0.62004,
    "c": 0.1485,
    "h": 265.7
  },
  "luminance": 0.23252
}

Semantic roles & 50–950 ramp

primary

#5B81DF

secondary

#E3D5B2

accent

#9A16CF

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5B81DF

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

Preview Lab → · Contrast checker → · Palette generator →