#5BB5EC#5BB5EC

#5BB5EC is a light, moderate cyan. Relative luminance 0.413; OKLCH L 74.0% C 0.117 H 238.0°. Best body text is #000000 at 9.27:1 contrast (WCAG AA passes).

Color values

HEX#5BB5EC
RGBrgb(91, 181, 236)
HSLhsl(203, 79%, 64%)
HSVhsv(203, 61%, 93%)
CMYKcmyk(61.4%, 23.3%, 0%, 7.5%)
CIE-LABlab(70.40, -10.75, -35.49)
CIE-LCHlch(70.40, 37.08, 253.14°)
OKLaboklab(74% -0.0621 -0.0995)
OKLCHoklch(74% 0.117 238)
XYZxyz(35.9728, 41.3245, 85.4213)
Luminance0.4133 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#5BB5EC #EC925B
analogous
#5BECDB #5BB5EC #5B6DEC
triadic
#5BB5EC #EC5BB5 #B5EC5B
tetradic
#5BB5EC #DB5BEC #EC925B #6DEC5B
square
#5BB5EC #DB5BEC #EC925B #6DEC5B
split-complementary
#5BB5EC #EC5B6D #ECDB5B
monochromatic
#157AB7 #249CE6 #5BB5EC #92CEF2 #C9E6F9

Accessibility & contrast

On white

2.27
#5BB5EC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.27
#5BB5EC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB5EC
9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##5BB5EC#FFFFFF#000000##000000
##5BB5EC1.002.279.279.27
#FFFFFF2.271.0021.0021.00
#0000009.2721.001.001.00
##0000009.2721.001.001.00

Color blindness preview

Protanopia (red-blind)
#9CB4EF
Deuteranopia (green-blind)
#88A6EB
Tritanopia (blue-blind)
#00C3C8
Achromatopsia (no color)
#ACACAC

Design tokens & code

CSS
--color: #5bb5ec;
/* rgb */ color: rgb(91, 181, 236);
/* oklch */ color: oklch(74.0% 0.117 238.0);
Tailwind
colors: {
  custom: {
    50: '#96cbf2',
    500: '#5bb5ec',
    950: '#000000',
  },
}
SCSS
$custom: #5bb5ec;
$custom-light: #96cbf2;
$custom-dark: #000000;
JSON
{
  "hex": "#5bb5ec",
  "rgb": {
    "r": 91,
    "g": 181,
    "b": 236
  },
  "hsl": {
    "h": 202.759,
    "s": 79.235,
    "l": 64.118
  },
  "oklch": {
    "l": 0.73999,
    "c": 0.11731,
    "h": 238
  },
  "luminance": 0.41328
}

Semantic roles & 50–950 ramp

primary
#5BB5EC
secondary
#EBCBB8
accent
#590ADC
background
#F9FCFE
surface
#F2F8FD
border
#CCD1D5
text
#0E1317
muted
#7E8285

Preview Lab

Preview with #5BB5EC

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

Preview Lab → · Contrast checker → · Palette generator →

#5BB5EC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva