#37A3C9#37A3C9

#37A3C9 is a light, moderate cyan. Relative luminance 0.312; OKLCH L 67.1% C 0.110 H 225.8°. Best body text is #000000 at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#37A3C9
RGB	rgb(55, 163, 201)
HSL	hsl(196, 57%, 50%)
HSV	hsv(196, 73%, 79%)
CMYK	cmyk(72.6%, 18.9%, 0%, 21.2%)
CIE-LAB	lab(62.69, -17.94, -28.24)
CIE-LCH	lch(62.69, 33.46, 237.58°)
OKLab	oklab(67.09% -0.0769 -0.0791)
OKLCH	oklch(67.09% 0.11 225.8)
XYZ	xyz(25.2110, 31.2207, 59.9445)
Luminance	0.3122 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A3C9 #C95D37

analogous

#37C9A6 #37A3C9 #375AC9

triadic

#37A3C9 #C937A3 #A3C937

tetradic

#37A3C9 #A637C9 #C95D37 #5AC937

square

#37A3C9 #A637C9 #C95D37 #5AC937

split-complementary

#37A3C9 #C9375A #C9A637

monochromatic

#1C5569 #297C99 #37A3C9 #67B9D6 #97CFE3

Accessibility & contrast

On white

2.90

#37A3C9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.24

#37A3C9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A3C9

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A3C9	#FFFFFF	#000000	##000000
##37A3C9	1.00	2.90	7.24	7.24
#FFFFFF	2.90	1.00	21.00	21.00
#000000	7.24	21.00	1.00	1.00
##000000	7.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA0CB

Deuteranopia (green-blind)

#7A91C9

Tritanopia (blue-blind)

#00AEAF

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #37a3c9;
/* rgb */ color: rgb(55, 163, 201);
/* oklch */ color: oklch(67.1% 0.110 225.8);

Tailwind

colors: {
  custom: {
    50: '#81bed9',
    500: '#37a3c9',
    950: '#000000',
  },
}

SCSS

$custom: #37a3c9;
$custom-light: #81bed9;
$custom-dark: #000000;

JSON

{
  "hex": "#37a3c9",
  "rgb": {
    "r": 55,
    "g": 163,
    "b": 201
  },
  "hsl": {
    "h": 195.616,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.67092,
    "c": 0.11033,
    "h": 225.8
  },
  "luminance": 0.31224
}

Semantic roles & 50–950 ramp

primary

#37A3C9

secondary

#CF9E8D

accent

#6F47E1

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1214

muted

#7D8183

Preview Lab

Preview with #37A3C9

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

Preview Lab → · Contrast checker → · Palette generator →