#37B9DA#37B9DA

#37B9DA is a light, moderate cyan. Relative luminance 0.406; OKLCH L 73.1% C 0.118 H 219.0°. Best body text is #000000 at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#37B9DA
RGB	rgb(55, 185, 218)
HSL	hsl(192, 69%, 54%)
HSV	hsv(192, 75%, 85%)
CMYK	cmyk(74.8%, 15.1%, 0%, 14.5%)
CIE-LAB	lab(69.87, -23.85, -26.57)
CIE-LCH	lch(69.87, 35.71, 228.09°)
OKLab	oklab(73.07% -0.0918 -0.0743)
OKLCH	oklch(73.07% 0.118 219)
XYZ	xyz(31.5741, 40.5683, 72.4825)
Luminance	0.4057 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B9DA #DA5837

analogous

#37DAA9 #37B9DA #3767DA

triadic

#37B9DA #DA37B9 #B9DA37

tetradic

#37B9DA #A937DA #DA5837 #67DA37

square

#37B9DA #A937DA #DA5837 #67DA37

split-complementary

#37B9DA #DA3767 #DAA937

monochromatic

#186A7F #2195B3 #37B9DA #6BCBE4 #9EDDED

Accessibility & contrast

On white

2.30

#37B9DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.11

#37B9DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B9DA

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B9DA	#FFFFFF	#000000	##000000
##37B9DA	1.00	2.30	9.11	9.11
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.11	21.00	1.00	1.00
##000000	9.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B4DC

Deuteranopia (green-blind)

#8EA4DA

Tritanopia (blue-blind)

#00C4C3

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #37b9da;
/* rgb */ color: rgb(55, 185, 218);
/* oklch */ color: oklch(73.1% 0.118 219.0);

Tailwind

colors: {
  custom: {
    50: '#85cee5',
    500: '#37b9da',
    950: '#000000',
  },
}

SCSS

$custom: #37b9da;
$custom-light: #85cee5;
$custom-dark: #000000;

JSON

{
  "hex": "#37b9da",
  "rgb": {
    "r": 55,
    "g": 185,
    "b": 218
  },
  "hsl": {
    "h": 192.147,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.73065,
    "c": 0.11806,
    "h": 219
  },
  "luminance": 0.40572
}

Semantic roles & 50–950 ramp

primary

#37B9DA

secondary

#D9A293

accent

#603CEC

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #37B9DA

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

Preview Lab → · Contrast checker → · Palette generator →