#5B8BF0#5B8BF0

#5B8BF0 is a light, vivid blue. Relative luminance 0.270; OKLCH L 65.1% C 0.160 H 263.5°. Best body text is #000000 at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#5B8BF0
RGB	rgb(91, 139, 240)
HSL	hsl(221, 83%, 65%)
HSV	hsv(221, 62%, 94%)
CMYK	cmyk(62.1%, 42.1%, 0%, 5.9%)
CIE-LAB	lab(58.95, 14.57, -55.70)
CIE-LCH	lch(58.95, 57.58, 284.66°)
OKLab	oklab(65.1% -0.0182 -0.1588)
OKLCH	oklch(65.1% 0.16 263.5)
XYZ	xyz(29.2697, 26.9780, 86.0860)
Luminance	0.2698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B8BF0 #F0C05B

analogous

#5BD6F0 #5B8BF0 #755BF0

triadic

#5B8BF0 #F05B8B #8BF05B

tetradic

#5B8BF0 #F05BD6 #F0C05B #5BF075

square

#5B8BF0 #F05BD6 #F0C05B #5BF075

split-complementary

#5B8BF0 #F0755B #D6F05B

monochromatic

#1149BF #2363EB #5B8BF0 #93B3F5 #CBDAFA

Accessibility & contrast

On white

3.28

#5B8BF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.40

#5B8BF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B8BF0

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B8BF0	#FFFFFF	#000000	##000000
##5B8BF0	1.00	3.28	6.40	6.40
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.40	21.00	1.00	1.00
##000000	6.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D95F4

Deuteranopia (green-blind)

#4688EE

Tritanopia (blue-blind)

#00A2B2

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #5b8bf0;
/* rgb */ color: rgb(91, 139, 240);
/* oklch */ color: oklch(65.1% 0.160 263.5);

Tailwind

colors: {
  custom: {
    50: '#96acf5',
    500: '#5b8bf0',
    950: '#000000',
  },
}

SCSS

$custom: #5b8bf0;
$custom-light: #96acf5;
$custom-dark: #000000;

JSON

{
  "hex": "#5b8bf0",
  "rgb": {
    "r": 91,
    "g": 139,
    "b": 240
  },
  "hsl": {
    "h": 220.671,
    "s": 83.24,
    "l": 64.902
  },
  "oklch": {
    "l": 0.65099,
    "c": 0.15982,
    "h": 263.5
  },
  "luminance": 0.26981
}

Semantic roles & 50–950 ramp

primary

#5B8BF0

secondary

#EDDCBA

accent

#9906E0

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0F1017

muted

#7E7F85

Preview Lab

Preview with #5B8BF0

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

Preview Lab → · Contrast checker → · Palette generator →