#5BB1FF#5BB1FF

#5BB1FF is a light, vivid cyan. Relative luminance 0.409; OKLCH L 74.0% C 0.141 H 248.2°. Best body text is #000000 at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#5BB1FF
RGB	rgb(91, 177, 255)
HSL	hsl(209, 100%, 68%)
HSV	hsv(209, 64%, 100%)
CMYK	cmyk(64.3%, 30.6%, 0%, 0%)
CIE-LAB	lab(70.09, -2.50, -46.27)
CIE-LCH	lch(70.09, 46.34, 266.91°)
OKLab	oklab(74.02% -0.0523 -0.1308)
OKLCH	oklch(74.02% 0.141 248.2)
XYZ	xyz(38.0798, 40.8846, 100.4730)
Luminance	0.4089 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB1FF #FFA95B

analogous

#5BFFFB #5BB1FF #5B5FFF

triadic

#5BB1FF #FF5BB1 #B1FF5B

tetradic

#5BB1FF #FB5BFF #FFA95B #5FFF5B

square

#5BB1FF #FB5BFF #FFA95B #5FFF5B

split-complementary

#5BB1FF #FF5B5F #FFFB5B

monochromatic

#0075E0 #1E94FF #5BB1FF #98CEFF #D5EBFF

Accessibility & contrast

On white

2.29

#5BB1FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.18

#5BB1FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB1FF

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB1FF	#FFFFFF	#000000	##000000
##5BB1FF	1.00	2.29	9.18	9.18
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.18	21.00	1.00	1.00
##000000	9.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FB4FF

Deuteranopia (green-blind)

#78A4FD

Tritanopia (blue-blind)

#00C3CD

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #5bb1ff;
/* rgb */ color: rgb(91, 177, 255);
/* oklch */ color: oklch(74.0% 0.141 248.2);

Tailwind

colors: {
  custom: {
    50: '#98c8ff',
    500: '#5bb1ff',
    950: '#000000',
  },
}

SCSS

$custom: #5bb1ff;
$custom-light: #98c8ff;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb1ff",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 255
  },
  "hsl": {
    "h": 208.537,
    "s": 100,
    "l": 67.843
  },
  "oklch": {
    "l": 0.74024,
    "c": 0.14084,
    "h": 248.2
  },
  "luminance": 0.40888
}

Semantic roles & 50–950 ramp

primary

#5BB1FF

secondary

#F4DAC2

accent

#6D00E6

background

#FAFCFF

surface

#F3F8FF

border

#CDD1D7

text

#0F1318

muted

#7F8286

Preview Lab

Preview with #5BB1FF

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

Preview Lab → · Contrast checker → · Palette generator →