#37ACD9#37ACD9

#37ACD9 is a light, vivid cyan. Relative luminance 0.353; OKLCH L 69.9% C 0.120 H 228.4°. Best body text is #000000 at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#37ACD9
RGB	rgb(55, 172, 217)
HSL	hsl(197, 68%, 53%)
HSV	hsv(197, 75%, 85%)
CMYK	cmyk(74.7%, 20.7%, 0%, 14.9%)
CIE-LAB	lab(66.00, -17.43, -32.00)
CIE-LCH	lch(66.00, 36.44, 241.42°)
OKLab	oklab(69.95% -0.0797 -0.0898)
OKLCH	oklch(69.95% 0.12 228.4)
XYZ	xyz(28.8474, 35.3236, 70.9300)
Luminance	0.3533 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37ACD9 #D96437

analogous

#37D9B5 #37ACD9 #375BD9

triadic

#37ACD9 #D937AC #ACD937

tetradic

#37ACD9 #B537D9 #D96437 #5BD937

square

#37ACD9 #B537D9 #D96437 #5BD937

split-complementary

#37ACD9 #D9375B #D9B537

monochromatic

#18617E #2289B1 #37ACD9 #6AC1E3 #9ED7ED

Accessibility & contrast

On white

2.60

#37ACD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.07

#37ACD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37ACD9

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37ACD9	#FFFFFF	#000000	##000000
##37ACD9	1.00	2.60	8.07	8.07
#FFFFFF	2.60	1.00	21.00	21.00
#000000	8.07	21.00	1.00	1.00
##000000	8.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A9DB

Deuteranopia (green-blind)

#7F9AD8

Tritanopia (blue-blind)

#00B9BB

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #37acd9;
/* rgb */ color: rgb(55, 172, 217);
/* oklch */ color: oklch(69.9% 0.120 228.4);

Tailwind

colors: {
  custom: {
    50: '#84c4e5',
    500: '#37acd9',
    950: '#000000',
  },
}

SCSS

$custom: #37acd9;
$custom-light: #84c4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#37acd9",
  "rgb": {
    "r": 55,
    "g": 172,
    "b": 217
  },
  "hsl": {
    "h": 196.667,
    "s": 68.067,
    "l": 53.333
  },
  "oklch": {
    "l": 0.69948,
    "c": 0.12013,
    "h": 228.4
  },
  "luminance": 0.35327
}

Semantic roles & 50–950 ramp

primary

#37ACD9

secondary

#D9A693

accent

#6D3DEB

background

#F8FCFE

surface

#F0F8FC

border

#CBD1D5

text

#0D1215

muted

#7D8184

Preview Lab

Preview with #37ACD9

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

Preview Lab → · Contrast checker → · Palette generator →