#5B99EC#5B99EC

#5B99EC is a light, vivid cyan. Relative luminance 0.311; OKLCH L 67.8% C 0.139 H 256.2°. Best body text is #000000 at 7.21:1 contrast (WCAG AA passes).

Color values

HEX#5B99EC
RGBrgb(91, 153, 236)
HSLhsl(214, 79%, 64%)
HSVhsv(214, 61%, 93%)
CMYKcmyk(61.4%, 35.2%, 0%, 7.5%)
CIE-LABlab(62.56, 4.97, -47.77)
CIE-LCHlch(62.56, 48.03, 275.94°)
OKLaboklab(67.83% -0.0332 -0.1354)
OKLCHoklch(67.83% 0.139 256.2)
XYZxyz(30.8405, 31.0599, 83.7105)
Luminance0.3106 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#5B99EC #ECAE5B
analogous
#5BE1EC #5B99EC #665BEC
triadic
#5B99EC #EC5B99 #99EC5B
tetradic
#5B99EC #EC5BE1 #ECAE5B #5BEC66
square
#5B99EC #EC5BE1 #ECAE5B #5BEC66
split-complementary
#5B99EC #EC665B #E1EC5B
monochromatic
#155BB7 #2477E6 #5B99EC #92BBF2 #C9DDF9

Accessibility & contrast

On white

2.91
#5B99EC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.21
#5B99EC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5B99EC
7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##5B99EC#FFFFFF#000000##000000
##5B99EC1.002.917.217.21
#FFFFFF2.911.0021.0021.00
#0000007.2121.001.001.00
##0000007.2121.001.001.00

Color blindness preview

Protanopia (red-blind)
#759FEF
Deuteranopia (green-blind)
#6291EA
Tritanopia (blue-blind)
#00ACB7
Achromatopsia (no color)
#979797

Design tokens & code

CSS
--color: #5b99ec;
/* rgb */ color: rgb(91, 153, 236);
/* oklch */ color: oklch(67.8% 0.139 256.2);
Tailwind
colors: {
  custom: {
    50: '#95b6f2',
    500: '#5b99ec',
    950: '#000000',
  },
}
SCSS
$custom: #5b99ec;
$custom-light: #95b6f2;
$custom-dark: #000000;
JSON
{
  "hex": "#5b99ec",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 236
  },
  "hsl": {
    "h": 214.345,
    "s": 79.235,
    "l": 64.118
  },
  "oklch": {
    "l": 0.67826,
    "c": 0.1394,
    "h": 256.2
  },
  "luminance": 0.31063
}

Semantic roles & 50–950 ramp

primary
#5B99EC
secondary
#EBD5B8
accent
#820ADC
background
#F9FBFE
surface
#F2F6FD
border
#CCD0D5
text
#0E1117
muted
#7E8085

Preview Lab

Preview with #5B99EC

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

Preview Lab → · Contrast checker → · Palette generator →

#5B99EC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva