#37A3BD#37A3BD

#37A3BD is a light, moderate cyan. Relative luminance 0.307; OKLCH L 66.6% C 0.102 H 217.3°. Best body text is #000000 at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#37A3BD
RGB	rgb(55, 163, 189)
HSL	hsl(192, 55%, 48%)
HSV	hsv(192, 71%, 74%)
CMYK	cmyk(70.9%, 13.8%, 0%, 25.9%)
CIE-LAB	lab(62.23, -21.83, -22.24)
CIE-LCH	lch(62.23, 31.16, 225.53°)
OKLab	oklab(66.57% -0.0815 -0.062)
OKLCH	oklch(66.57% 0.102 217.3)
XYZ	xyz(23.8542, 30.6780, 52.7985)
Luminance	0.3068 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A3BD #BD5137

analogous

#37BD94 #37A3BD #3760BD

triadic

#37A3BD #BD37A3 #A3BD37

tetradic

#37A3BD #9437BD #BD5137 #60BD37

square

#37A3BD #9437BD #BD5137 #60BD37

split-complementary

#37A3BD #BD3760 #BD9437

monochromatic

#1B515E #297A8E #37A3BD #60BBD1 #90CFDF

Accessibility & contrast

On white

2.94

#37A3BD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.14

#37A3BD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A3BD

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A3BD	#FFFFFF	#000000	##000000
##37A3BD	1.00	2.94	7.14	7.14
#FFFFFF	2.94	1.00	21.00	21.00
#000000	7.14	21.00	1.00	1.00
##000000	7.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#929EBE

Deuteranopia (green-blind)

#7F91BD

Tritanopia (blue-blind)

#00ACAB

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #37a3bd;
/* rgb */ color: rgb(55, 163, 189);
/* oklch */ color: oklch(66.6% 0.102 217.3);

Tailwind

colors: {
  custom: {
    50: '#80bed1',
    500: '#37a3bd',
    950: '#000000',
  },
}

SCSS

$custom: #37a3bd;
$custom-light: #80bed1;
$custom-dark: #000000;

JSON

{
  "hex": "#37a3bd",
  "rgb": {
    "r": 55,
    "g": 163,
    "b": 189
  },
  "hsl": {
    "h": 191.642,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.66572,
    "c": 0.10242,
    "h": 217.3
  },
  "luminance": 0.30681
}

Semantic roles & 50–950 ramp

primary

#37A3BD

secondary

#C99386

accent

#664ADE

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0B1214

muted

#7C8182

Preview Lab

Preview with #37A3BD

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

Preview Lab → · Contrast checker → · Palette generator →