#5BB5FF#5BB5FF

#5BB5FF is a light, vivid cyan. Relative luminance 0.425; OKLCH L 74.9% C 0.138 H 245.9°. Best body text is #000000 at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#5BB5FF
RGB	rgb(91, 181, 255)
HSL	hsl(207, 100%, 68%)
HSV	hsv(207, 64%, 100%)
CMYK	cmyk(64.3%, 29%, 0%, 0%)
CIE-LAB	lab(71.21, -4.72, -44.53)
CIE-LCH	lch(71.21, 44.78, 263.95°)
OKLab	oklab(74.9% -0.0562 -0.1257)
OKLCH	oklch(74.9% 0.138 245.9)
XYZ	xyz(38.8815, 42.4879, 100.7403)
Luminance	0.4249 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB5FF #FFA55B

analogous

#5BFFF7 #5BB5FF #5B63FF

triadic

#5BB5FF #FF5BB5 #B5FF5B

tetradic

#5BB5FF #F75BFF #FFA55B #63FF5B

square

#5BB5FF #F75BFF #FFA55B #63FF5B

split-complementary

#5BB5FF #FF5B63 #FFF75B

monochromatic

#007BE0 #1E99FF #5BB5FF #98D1FF #D5ECFF

Accessibility & contrast

On white

2.21

#5BB5FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.50

#5BB5FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB5FF

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB5FF	#FFFFFF	#000000	##000000
##5BB5FF	1.00	2.21	9.50	9.50
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.50	21.00	1.00	1.00
##000000	9.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94B7FF

Deuteranopia (green-blind)

#7EA7FE

Tritanopia (blue-blind)

#00C7CF

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #5bb5ff;
/* rgb */ color: rgb(91, 181, 255);
/* oklch */ color: oklch(74.9% 0.138 245.9);

Tailwind

colors: {
  custom: {
    50: '#98caff',
    500: '#5bb5ff',
    950: '#000000',
  },
}

SCSS

$custom: #5bb5ff;
$custom-light: #98caff;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb5ff",
  "rgb": {
    "r": 91,
    "g": 181,
    "b": 255
  },
  "hsl": {
    "h": 207.073,
    "s": 100,
    "l": 67.843
  },
  "oklch": {
    "l": 0.74899,
    "c": 0.13767,
    "h": 245.9
  },
  "luminance": 0.42492
}

Semantic roles & 50–950 ramp

primary

#5BB5FF

secondary

#F4D8C2

accent

#6800E6

background

#FAFCFF

surface

#F3F8FF

border

#CDD1D7

text

#0F1318

muted

#7F8286

Preview Lab

Preview with #5BB5FF

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

Preview Lab → · Contrast checker → · Palette generator →