#37B8DA#37B8DA

#37B8DA is a light, moderate cyan. Relative luminance 0.402; OKLCH L 72.8% C 0.118 H 219.8°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#37B8DA
RGB	rgb(55, 184, 218)
HSL	hsl(193, 69%, 54%)
HSV	hsv(193, 75%, 85%)
CMYK	cmyk(74.8%, 15.6%, 0%, 14.5%)
CIE-LAB	lab(69.58, -23.35, -27.03)
CIE-LCH	lch(69.58, 35.71, 229.18°)
OKLab	oklab(72.83% -0.0908 -0.0756)
OKLCH	oklch(72.83% 0.118 219.8)
XYZ	xyz(31.3656, 40.1514, 72.4130)
Luminance	0.4016 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B8DA #DA5937

analogous

#37DAAA #37B8DA #3766DA

triadic

#37B8DA #DA37B8 #B8DA37

tetradic

#37B8DA #AA37DA #DA5937 #66DA37

square

#37B8DA #AA37DA #DA5937 #66DA37

split-complementary

#37B8DA #DA3766 #DAAA37

monochromatic

#18697F #2194B3 #37B8DA #6BCAE4 #9EDDED

Accessibility & contrast

On white

2.33

#37B8DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.03

#37B8DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B8DA

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B8DA	#FFFFFF	#000000	##000000
##37B8DA	1.00	2.33	9.03	9.03
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.03	21.00	1.00	1.00
##000000	9.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B3DC

Deuteranopia (green-blind)

#8DA3DA

Tritanopia (blue-blind)

#00C3C3

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #37b8da;
/* rgb */ color: rgb(55, 184, 218);
/* oklch */ color: oklch(72.8% 0.118 219.8);

Tailwind

colors: {
  custom: {
    50: '#85cde5',
    500: '#37b8da',
    950: '#000000',
  },
}

SCSS

$custom: #37b8da;
$custom-light: #85cde5;
$custom-dark: #000000;

JSON

{
  "hex": "#37b8da",
  "rgb": {
    "r": 55,
    "g": 184,
    "b": 218
  },
  "hsl": {
    "h": 192.515,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.72828,
    "c": 0.11813,
    "h": 219.8
  },
  "luminance": 0.40155
}

Semantic roles & 50–950 ramp

primary

#37B8DA

secondary

#D9A293

accent

#613CEC

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #37B8DA

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

Preview Lab → · Contrast checker → · Palette generator →