#37A3CC#37A3CC

#37A3CC is a light, moderate cyan. Relative luminance 0.314; OKLCH L 67.2% C 0.113 H 227.7°. Best body text is #000000 at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#37A3CC
RGB	rgb(55, 163, 204)
HSL	hsl(197, 59%, 51%)
HSV	hsv(197, 73%, 80%)
CMYK	cmyk(73%, 20.1%, 0%, 20%)
CIE-LAB	lab(62.81, -16.95, -29.73)
CIE-LCH	lch(62.81, 34.22, 240.31°)
OKLab	oklab(67.23% -0.0758 -0.0834)
OKLCH	oklch(67.23% 0.113 227.7)
XYZ	xyz(25.5674, 31.3633, 61.8213)
Luminance	0.3137 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A3CC #CC6037

analogous

#37CCAA #37A3CC #3758CC

triadic

#37A3CC #CC37A3 #A3CC37

tetradic

#37A3CC #AA37CC #CC6037 #58CC37

square

#37A3CC #AA37CC #CC6037 #58CC37

split-complementary

#37A3CC #CC3758 #CCAA37

monochromatic

#1C576D #287D9E #37A3CC #68B9D8 #99D0E5

Accessibility & contrast

On white

2.89

#37A3CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.27

#37A3CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A3CC

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A3CC	#FFFFFF	#000000	##000000
##37A3CC	1.00	2.89	7.27	7.27
#FFFFFF	2.89	1.00	21.00	21.00
#000000	7.27	21.00	1.00	1.00
##000000	7.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA0CE

Deuteranopia (green-blind)

#7992CB

Tritanopia (blue-blind)

#00AFB0

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #37a3cc;
/* rgb */ color: rgb(55, 163, 204);
/* oklch */ color: oklch(67.2% 0.113 227.7);

Tailwind

colors: {
  custom: {
    50: '#82bedb',
    500: '#37a3cc',
    950: '#000000',
  },
}

SCSS

$custom: #37a3cc;
$custom-light: #82bedb;
$custom-dark: #000000;

JSON

{
  "hex": "#37a3cc",
  "rgb": {
    "r": 55,
    "g": 163,
    "b": 204
  },
  "hsl": {
    "h": 196.51,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.67227,
    "c": 0.11268,
    "h": 227.7
  },
  "luminance": 0.31366
}

Semantic roles & 50–950 ramp

primary

#37A3CC

secondary

#D0A18E

accent

#7145E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #37A3CC

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

Preview Lab → · Contrast checker → · Palette generator →