#31B3DC#31B3DC

#31B3DC is a light, vivid cyan. Relative luminance 0.381; OKLCH L 71.6% C 0.122 H 224.3°. Best body text is #000000 at 8.61:1 contrast (WCAG AA passes).

Color values

HEX#31B3DC
RGBrgb(49, 179, 220)
HSLhsl(194, 71%, 53%)
HSVhsv(194, 78%, 86%)
CMYKcmyk(77.7%, 18.6%, 0%, 13.7%)
CIE-LABlab(68.06, -20.78, -30.47)
CIE-LCHlch(68.06, 36.88, 235.71°)
OKLaboklab(71.6% -0.0877 -0.0854)
OKLCHoklch(71.6% 0.122 224.3)
XYZxyz(30.2996, 38.0568, 73.4450)
Luminance0.3806 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#31B3DC #DC5A31
analogous
#31DCAF #31B3DC #315DDC
triadic
#31B3DC #DC31B3 #B3DC31
tetradic
#31B3DC #AF31DC #DC5A31 #5DDC31
square
#31B3DC #AF31DC #DC5A31 #5DDC31
split-complementary
#31B3DC #DC315D #DCAF31
monochromatic
#15647D #1E8EB2 #31B3DC #65C6E5 #9ADAEE

Accessibility & contrast

On white

2.44
#31B3DC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.61
#31B3DC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B3DC
8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##31B3DC#FFFFFF#000000##000000
##31B3DC1.002.448.618.61
#FFFFFF2.441.0021.0021.00
#0000008.6121.001.001.00
##0000008.6121.001.001.00

Color blindness preview

Protanopia (red-blind)
#9CAFDE
Deuteranopia (green-blind)
#859FDC
Tritanopia (blue-blind)
#00BFC0
Achromatopsia (no color)
#A6A6A6

Design tokens & code

CSS
--color: #31b3dc;
/* rgb */ color: rgb(49, 179, 220);
/* oklch */ color: oklch(71.6% 0.122 224.3);
Tailwind
colors: {
  custom: {
    50: '#83cae7',
    500: '#31b3dc',
    950: '#000000',
  },
}
SCSS
$custom: #31b3dc;
$custom-light: #83cae7;
$custom-dark: #000000;
JSON
{
  "hex": "#31b3dc",
  "rgb": {
    "r": 49,
    "g": 179,
    "b": 220
  },
  "hsl": {
    "h": 194.386,
    "s": 70.954,
    "l": 52.745
  },
  "oklch": {
    "l": 0.71604,
    "c": 0.12241,
    "h": 224.3
  },
  "luminance": 0.3806
}

Semantic roles & 50–950 ramp

primary
#31B3DC
secondary
#D9A18F
accent
#653AEE
background
#F8FCFE
surface
#F0F8FC
border
#CBD1D5
text
#0D1316
muted
#7D8284

Preview Lab

Preview with #31B3DC

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

Preview Lab → · Contrast checker → · Palette generator →

#31B3DC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva