#31B1CC#31B1CC

#31B1CC is a light, moderate cyan. Relative luminance 0.365; OKLCH L 70.4% C 0.113 H 215.5°. Best body text is #000000 at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#31B1CC
RGB	rgb(49, 177, 204)
HSL	hsl(190, 61%, 50%)
HSV	hsv(190, 76%, 80%)
CMYK	cmyk(76%, 13.2%, 0%, 20%)
CIE-LAB	lab(66.86, -24.95, -23.51)
CIE-LCH	lch(66.86, 34.28, 223.30°)
OKLab	oklab(70.44% -0.0919 -0.0656)
OKLCH	oklch(70.44% 0.113 215.5)
XYZ	xyz(27.8832, 36.4535, 62.6817)
Luminance	0.3646 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B1CC #CC4C31

analogous

#31CC9A #31B1CC #3163CC

triadic

#31B1CC #CC31B1 #B1CC31

tetradic

#31B1CC #9A31CC #CC4C31 #63CC31

square

#31B1CC #9A31CC #CC4C31 #63CC31

split-complementary

#31B1CC #CC3163 #CC9A31

monochromatic

#195B69 #25869B #31B1CC #61C4D9 #92D7E5

Accessibility & contrast

On white

2.53

#31B1CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.29

#31B1CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B1CC

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B1CC	#FFFFFF	#000000	##000000
##31B1CC	1.00	2.53	8.29	8.29
#FFFFFF	2.53	1.00	21.00	21.00
#000000	8.29	21.00	1.00	1.00
##000000	8.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EABCE

Deuteranopia (green-blind)

#899CCC

Tritanopia (blue-blind)

#00BBB9

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #31b1cc;
/* rgb */ color: rgb(49, 177, 204);
/* oklch */ color: oklch(70.4% 0.113 215.5);

Tailwind

colors: {
  custom: {
    50: '#81c8db',
    500: '#31b1cc',
    950: '#000000',
  },
}

SCSS

$custom: #31b1cc;
$custom-light: #81c8db;
$custom-dark: #000000;

JSON

{
  "hex": "#31b1cc",
  "rgb": {
    "r": 49,
    "g": 177,
    "b": 204
  },
  "hsl": {
    "h": 190.452,
    "s": 61.265,
    "l": 49.608
  },
  "oklch": {
    "l": 0.70442,
    "c": 0.11291,
    "h": 215.5
  },
  "luminance": 0.36457
}

Semantic roles & 50–950 ramp

primary

#31B1CC

secondary

#D09589

accent

#5F43E4

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0C1315

muted

#7D8283

Preview Lab

Preview with #31B1CC

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

Preview Lab → · Contrast checker → · Palette generator →