#37B4D1#37B4D1

#37B4D1 is a light, moderate cyan. Relative luminance 0.381; OKLCH L 71.5% C 0.113 H 217.0°. Best body text is #000000 at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#37B4D1
RGB	rgb(55, 180, 209)
HSL	hsl(191, 63%, 52%)
HSV	hsv(191, 74%, 82%)
CMYK	cmyk(73.7%, 13.9%, 0%, 18%)
CIE-LAB	lab(68.06, -24.18, -24.42)
CIE-LCH	lch(68.06, 34.37, 225.28°)
OKLab	oklab(71.5% -0.0904 -0.0681)
OKLCH	oklch(71.5% 0.113 217)
XYZ	xyz(29.4006, 38.0547, 66.1050)
Luminance	0.3806 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B4D1 #D15437

analogous

#37D1A1 #37B4D1 #3767D1

triadic

#37B4D1 #D137B4 #B4D137

tetradic

#37B4D1 #A137D1 #D15437 #67D137

square

#37B4D1 #A137D1 #D15437 #67D137

split-complementary

#37B4D1 #D13767 #D1A137

monochromatic

#1A6273 #268DA5 #37B4D1 #69C7DC #9BD9E8

Accessibility & contrast

On white

2.44

#37B4D1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.61

#37B4D1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B4D1

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B4D1	#FFFFFF	#000000	##000000
##37B4D1	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)

#A1AFD3

Deuteranopia (green-blind)

#8C9FD1

Tritanopia (blue-blind)

#00BEBD

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #37b4d1;
/* rgb */ color: rgb(55, 180, 209);
/* oklch */ color: oklch(71.5% 0.113 217.0);

Tailwind

colors: {
  custom: {
    50: '#84cadf',
    500: '#37b4d1',
    950: '#000000',
  },
}

SCSS

$custom: #37b4d1;
$custom-light: #84cadf;
$custom-dark: #000000;

JSON

{
  "hex": "#37b4d1",
  "rgb": {
    "r": 55,
    "g": 180,
    "b": 209
  },
  "hsl": {
    "h": 191.299,
    "s": 62.602,
    "l": 51.765
  },
  "oklch": {
    "l": 0.71499,
    "c": 0.11324,
    "h": 217
  },
  "luminance": 0.38058
}

Semantic roles & 50–950 ramp

primary

#37B4D1

secondary

#D49D90

accent

#6142E6

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0C1315

muted

#7D8283

Preview Lab

Preview with #37B4D1

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

Preview Lab → · Contrast checker → · Palette generator →