#31B4DB#31B4DB

#31B4DB is a light, vivid cyan. Relative luminance 0.384; OKLCH L 71.8% C 0.121 H 222.9°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#31B4DB
RGB	rgb(49, 180, 219)
HSL	hsl(194, 70%, 53%)
HSV	hsv(194, 78%, 86%)
CMYK	cmyk(77.6%, 17.8%, 0%, 14.1%)
CIE-LAB	lab(68.32, -21.62, -29.52)
CIE-LCH	lch(68.32, 36.59, 233.78°)
OKLab	oklab(71.8% -0.089 -0.0827)
OKLCH	oklch(71.8% 0.121 222.9)
XYZ	xyz(30.3687, 38.4062, 72.8167)
Luminance	0.3841 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B4DB #DB5831

analogous

#31DBAD #31B4DB #315FDB

triadic

#31B4DB #DB31B4 #B4DB31

tetradic

#31B4DB #AD31DB #DB5831 #5FDB31

square

#31B4DB #AD31DB #DB5831 #5FDB31

split-complementary

#31B4DB #DB315F #DBAD31

monochromatic

#16647C #1F8FB0 #31B4DB #65C7E4 #99DAED

Accessibility & contrast

On white

2.42

#31B4DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#31B4DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B4DB

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B4DB	#FFFFFF	#000000	##000000
##31B4DB	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB0DD

Deuteranopia (green-blind)

#87A0DB

Tritanopia (blue-blind)

#00C0C1

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #31b4db;
/* rgb */ color: rgb(49, 180, 219);
/* oklch */ color: oklch(71.8% 0.121 222.9);

Tailwind

colors: {
  custom: {
    50: '#83cae6',
    500: '#31b4db',
    950: '#000000',
  },
}

SCSS

$custom: #31b4db;
$custom-light: #83cae6;
$custom-dark: #000000;

JSON

{
  "hex": "#31b4db",
  "rgb": {
    "r": 49,
    "g": 180,
    "b": 219
  },
  "hsl": {
    "h": 193.765,
    "s": 70.248,
    "l": 52.549
  },
  "oklch": {
    "l": 0.71797,
    "c": 0.12149,
    "h": 222.9
  },
  "luminance": 0.3841
}

Semantic roles & 50–950 ramp

primary

#31B4DB

secondary

#D9A08F

accent

#643BED

background

#F8FCFE

surface

#F0F8FC

border

#CBD1D5

text

#0D1316

muted

#7D8284

Preview Lab

Preview with #31B4DB

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

Preview Lab → · Contrast checker → · Palette generator →