#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
RGB	rgb(49, 179, 220)
HSL	hsl(194, 71%, 53%)
HSV	hsv(194, 78%, 86%)
CMYK	cmyk(77.7%, 18.6%, 0%, 13.7%)
CIE-LAB	lab(68.06, -20.78, -30.47)
CIE-LCH	lch(68.06, 36.88, 235.71°)
OKLab	oklab(71.6% -0.0877 -0.0854)
OKLCH	oklch(71.6% 0.122 224.3)
XYZ	xyz(30.2996, 38.0568, 73.4450)
Luminance	0.3806 (WCAG relative)
Temperature	cool
Family	cyan

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
##31B3DC	1.00	2.44	8.61	8.61
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.61	21.00	1.00	1.00
##000000	8.61	21.00	1.00	1.00

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 →