#5BBBE9#5BBBE9

#5BBBE9 is a light, moderate cyan. Relative luminance 0.436; OKLCH L 75.2% C 0.112 H 231.7°. Best body text is #000000 at 9.73:1 contrast (WCAG AA passes).

Color values

HEX#5BBBE9
RGBrgb(91, 187, 233)
HSLhsl(199, 76%, 64%)
HSVhsv(199, 61%, 91%)
CMYKcmyk(60.9%, 19.7%, 0%, 8.6%)
CIE-LABlab(71.99, -14.89, -31.40)
CIE-LCHlch(71.99, 34.75, 244.64°)
OKLaboklab(75.22% -0.0694 -0.0878)
OKLCHoklch(75.22% 0.112 231.7)
XYZxyz(36.7870, 43.6443, 83.5605)
Luminance0.4365 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#5BBBE9 #E9895B
analogous
#5BE9D0 #5BBBE9 #5B74E9
triadic
#5BBBE9 #E95BBB #BBE95B
tetradic
#5BBBE9 #D05BE9 #E9895B #74E95B
square
#5BBBE9 #D05BE9 #E9895B #74E95B
split-complementary
#5BBBE9 #E95B74 #E9D05B
monochromatic
#1880B2 #25A5E2 #5BBBE9 #91D1F0 #C7E8F7

Accessibility & contrast

On white

2.16
#5BBBE9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.73
#5BBBE9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BBBE9
9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##5BBBE9#FFFFFF#000000##000000
##5BBBE91.002.169.739.73
#FFFFFF2.161.0021.0021.00
#0000009.7321.001.001.00
##0000009.7321.001.001.00

Color blindness preview

Protanopia (red-blind)
#A4B9EB
Deuteranopia (green-blind)
#90AAE8
Tritanopia (blue-blind)
#00C8CA
Achromatopsia (no color)
#B0B0B0

Design tokens & code

CSS
--color: #5bbbe9;
/* rgb */ color: rgb(91, 187, 233);
/* oklch */ color: oklch(75.2% 0.112 231.7);
Tailwind
colors: {
  custom: {
    50: '#96cff0',
    500: '#5bbbe9',
    950: '#000000',
  },
}
SCSS
$custom: #5bbbe9;
$custom-light: #96cff0;
$custom-dark: #000000;
JSON
{
  "hex": "#5bbbe9",
  "rgb": {
    "r": 91,
    "g": 187,
    "b": 233
  },
  "hsl": {
    "h": 199.437,
    "s": 76.344,
    "l": 63.529
  },
  "oklch": {
    "l": 0.75221,
    "c": 0.11188,
    "h": 231.7
  },
  "luminance": 0.43648
}

Semantic roles & 50–950 ramp

primary
#5BBBE9
secondary
#E9C7B7
accent
#4F0DD9
background
#F9FCFE
surface
#F2F9FD
border
#CCD2D5
text
#0E1316
muted
#7E8284

Preview Lab

Preview with #5BBBE9

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

Preview Lab → · Contrast checker → · Palette generator →

#5BBBE9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva