#37A0BB#37A0BB

#37A0BB is a light, moderate cyan. Relative luminance 0.295; OKLCH L 65.8% C 0.101 H 218.5°. Best body text is #000000 at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#37A0BB
RGB	rgb(55, 160, 187)
HSL	hsl(192, 55%, 47%)
HSV	hsv(192, 71%, 73%)
CMYK	cmyk(70.6%, 14.4%, 0%, 26.7%)
CIE-LAB	lab(61.25, -20.91, -22.62)
CIE-LCH	lch(61.25, 30.80, 227.25°)
OKLab	oklab(65.76% -0.0793 -0.0631)
OKLCH	oklch(65.76% 0.101 218.5)
XYZ	xyz(23.1123, 29.5390, 51.4876)
Luminance	0.2954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A0BB #BB5237

analogous

#37BB94 #37A0BB #375EBB

triadic

#37A0BB #BB37A0 #A0BB37

tetradic

#37A0BB #9437BB #BB5237 #5EBB37

square

#37A0BB #9437BB #BB5237 #5EBB37

split-complementary

#37A0BB #BB375E #BB9437

monochromatic

#1B4F5C #29788C #37A0BB #5FB9D0 #8ECEDE

Accessibility & contrast

On white

3.04

#37A0BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.91

#37A0BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #37A0BB

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A0BB	#FFFFFF	#000000	##000000
##37A0BB	1.00	3.04	6.91	6.91
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.91	21.00	1.00	1.00
##000000	6.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F9BBC

Deuteranopia (green-blind)

#7C8EBB

Tritanopia (blue-blind)

#00A9A9

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #37a0bb;
/* rgb */ color: rgb(55, 160, 187);
/* oklch */ color: oklch(65.8% 0.101 218.5);

Tailwind

colors: {
  custom: {
    50: '#7fbccf',
    500: '#37a0bb',
    950: '#000000',
  },
}

SCSS

$custom: #37a0bb;
$custom-light: #7fbccf;
$custom-dark: #000000;

JSON

{
  "hex": "#37a0bb",
  "rgb": {
    "r": 55,
    "g": 160,
    "b": 187
  },
  "hsl": {
    "h": 192.273,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.6576,
    "c": 0.10132,
    "h": 218.5
  },
  "luminance": 0.29542
}

Semantic roles & 50–950 ramp

primary

#37A0BB

secondary

#C99385

accent

#684ADE

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1213

muted

#7C8182

Preview Lab

Preview with #37A0BB

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

Preview Lab → · Contrast checker → · Palette generator →