#37A5CC#37A5CC

#37A5CC is a light, moderate cyan. Relative luminance 0.321; OKLCH L 67.7% C 0.112 H 226.1°. Best body text is #000000 at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#37A5CC
RGB	rgb(55, 165, 204)
HSL	hsl(196, 59%, 51%)
HSV	hsv(196, 73%, 80%)
CMYK	cmyk(73%, 19.1%, 0%, 20%)
CIE-LAB	lab(63.41, -18.01, -28.81)
CIE-LCH	lch(63.41, 33.98, 237.98°)
OKLab	oklab(67.7% -0.0777 -0.0807)
OKLCH	oklch(67.7% 0.112 226.1)
XYZ	xyz(25.9253, 32.0791, 61.9406)
Luminance	0.3208 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A5CC #CC5E37

analogous

#37CCA9 #37A5CC #375ACC

triadic

#37A5CC #CC37A5 #A5CC37

tetradic

#37A5CC #A937CC #CC5E37 #5ACC37

square

#37A5CC #A937CC #CC5E37 #5ACC37

split-complementary

#37A5CC #CC375A #CCA937

monochromatic

#1C586D #287F9E #37A5CC #68BBD8 #99D1E5

Accessibility & contrast

On white

2.83

#37A5CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.42

#37A5CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A5CC

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A5CC	#FFFFFF	#000000	##000000
##37A5CC	1.00	2.83	7.42	7.42
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.42	21.00	1.00	1.00
##000000	7.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90A2CE

Deuteranopia (green-blind)

#7C93CC

Tritanopia (blue-blind)

#00B0B2

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #37a5cc;
/* rgb */ color: rgb(55, 165, 204);
/* oklch */ color: oklch(67.7% 0.112 226.1);

Tailwind

colors: {
  custom: {
    50: '#82bfdb',
    500: '#37a5cc',
    950: '#000000',
  },
}

SCSS

$custom: #37a5cc;
$custom-light: #82bfdb;
$custom-dark: #000000;

JSON

{
  "hex": "#37a5cc",
  "rgb": {
    "r": 55,
    "g": 165,
    "b": 204
  },
  "hsl": {
    "h": 195.705,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.67703,
    "c": 0.11208,
    "h": 226.1
  },
  "luminance": 0.32082
}

Semantic roles & 50–950 ramp

primary

#37A5CC

secondary

#D0A08E

accent

#6E45E3

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #37A5CC

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

Preview Lab → · Contrast checker → · Palette generator →