#37B5D4#37B5D4

#37B5D4 is a light, moderate cyan. Relative luminance 0.386; OKLCH L 71.9% C 0.115 H 218.2°. Best body text is #000000 at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#37B5D4
RGB	rgb(55, 181, 212)
HSL	hsl(192, 65%, 52%)
HSV	hsv(192, 74%, 83%)
CMYK	cmyk(74.1%, 14.6%, 0%, 16.9%)
CIE-LAB	lab(68.47, -23.74, -25.44)
CIE-LCH	lch(68.47, 34.80, 226.99°)
OKLab	oklab(71.86% -0.0902 -0.0711)
OKLCH	oklch(71.86% 0.115 218.2)
XYZ	xyz(29.9781, 38.6099, 68.1471)
Luminance	0.3861 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B5D4 #D45637

analogous

#37D4A4 #37B5D4 #3767D4

triadic

#37B5D4 #D437B5 #B5D437

tetradic

#37B5D4 #A437D4 #D45637 #67D437

square

#37B5D4 #A437D4 #D45637 #67D437

split-complementary

#37B5D4 #D43767 #D4A437

monochromatic

#1A6577 #248FA9 #37B5D4 #69C8DF #9CDAEA

Accessibility & contrast

On white

2.41

#37B5D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.72

#37B5D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B5D4

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B5D4	#FFFFFF	#000000	##000000
##37B5D4	1.00	2.41	8.72	8.72
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.72	21.00	1.00	1.00
##000000	8.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B0D6

Deuteranopia (green-blind)

#8CA0D4

Tritanopia (blue-blind)

#00C0BF

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #37b5d4;
/* rgb */ color: rgb(55, 181, 212);
/* oklch */ color: oklch(71.9% 0.115 218.2);

Tailwind

colors: {
  custom: {
    50: '#84cbe1',
    500: '#37b5d4',
    950: '#000000',
  },
}

SCSS

$custom: #37b5d4;
$custom-light: #84cbe1;
$custom-dark: #000000;

JSON

{
  "hex": "#37b5d4",
  "rgb": {
    "r": 55,
    "g": 181,
    "b": 212
  },
  "hsl": {
    "h": 191.847,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.71863,
    "c": 0.11486,
    "h": 218.2
  },
  "luminance": 0.38613
}

Semantic roles & 50–950 ramp

primary

#37B5D4

secondary

#D69F91

accent

#6140E8

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #37B5D4

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

Preview Lab → · Contrast checker → · Palette generator →