#5B8BF3#5B8BF3

#5B8BF3 is a light, vivid blue. Relative luminance 0.272; OKLCH L 65.3% C 0.164 H 263.8°. Best body text is #000000 at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#5B8BF3
RGB	rgb(91, 139, 243)
HSL	hsl(221, 86%, 65%)
HSV	hsv(221, 63%, 95%)
CMYK	cmyk(62.6%, 42.8%, 0%, 4.7%)
CIE-LAB	lab(59.12, 15.57, -57.10)
CIE-LCH	lch(59.12, 59.18, 285.26°)
OKLab	oklab(65.28% -0.0177 -0.1629)
OKLCH	oklch(65.28% 0.164 263.8)
XYZ	xyz(29.7190, 27.1577, 88.4524)
Luminance	0.2716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B8BF3 #F3C35B

analogous

#5BD7F3 #5B8BF3 #775BF3

triadic

#5B8BF3 #F35B8B #8BF35B

tetradic

#5B8BF3 #F35BD7 #F3C35B #5BF377

square

#5B8BF3 #F35BD7 #F3C35B #5BF377

split-complementary

#5B8BF3 #F3775B #D7F35B

monochromatic

#0E48C5 #2263EF #5B8BF3 #94B3F7 #CDDCFB

Accessibility & contrast

On white

3.26

#5B8BF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.43

#5B8BF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B8BF3

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B8BF3	#FFFFFF	#000000	##000000
##5B8BF3	1.00	3.26	6.43	6.43
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.43	21.00	1.00	1.00
##000000	6.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B96F7

Deuteranopia (green-blind)

#4388F1

Tritanopia (blue-blind)

#00A3B3

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #5b8bf3;
/* rgb */ color: rgb(91, 139, 243);
/* oklch */ color: oklch(65.3% 0.164 263.8);

Tailwind

colors: {
  custom: {
    50: '#96acf7',
    500: '#5b8bf3',
    950: '#000000',
  },
}

SCSS

$custom: #5b8bf3;
$custom-light: #96acf7;
$custom-dark: #000000;

JSON

{
  "hex": "#5b8bf3",
  "rgb": {
    "r": 91,
    "g": 139,
    "b": 243
  },
  "hsl": {
    "h": 221.053,
    "s": 86.364,
    "l": 65.49
  },
  "oklch": {
    "l": 0.6528,
    "c": 0.16383,
    "h": 263.8
  },
  "luminance": 0.2716
}

Semantic roles & 50–950 ramp

primary

#5B8BF3

secondary

#EEDEBB

accent

#9C03E3

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0F1017

muted

#7E7F85

Preview Lab

Preview with #5B8BF3

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

Preview Lab → · Contrast checker → · Palette generator →