#37B9DB#37B9DB

#37B9DB is a light, moderate cyan. Relative luminance 0.406; OKLCH L 73.1% C 0.119 H 219.6°. Best body text is #000000 at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#37B9DB
RGB	rgb(55, 185, 219)
HSL	hsl(192, 69%, 54%)
HSV	hsv(192, 75%, 86%)
CMYK	cmyk(74.9%, 15.5%, 0%, 14.1%)
CIE-LAB	lab(69.91, -23.53, -27.06)
CIE-LCH	lch(69.91, 35.87, 228.99°)
OKLab	oklab(73.11% -0.0914 -0.0757)
OKLCH	oklch(73.11% 0.119 219.6)
XYZ	xyz(31.7053, 40.6208, 73.1737)
Luminance	0.4063 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B9DB #DB5937

analogous

#37DBAB #37B9DB #3767DB

triadic

#37B9DB #DB37B9 #B9DB37

tetradic

#37B9DB #AB37DB #DB5937 #67DB37

square

#37B9DB #AB37DB #DB5937 #67DB37

split-complementary

#37B9DB #DB3767 #DBAB37

monochromatic

#176B80 #2096B4 #37B9DB #6BCBE4 #9FDDEE

Accessibility & contrast

On white

2.30

#37B9DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.13

#37B9DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B9DB

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B9DB	#FFFFFF	#000000	##000000
##37B9DB	1.00	2.30	9.13	9.13
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.13	21.00	1.00	1.00
##000000	9.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B4DD

Deuteranopia (green-blind)

#8EA4DB

Tritanopia (blue-blind)

#00C4C4

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #37b9db;
/* rgb */ color: rgb(55, 185, 219);
/* oklch */ color: oklch(73.1% 0.119 219.6);

Tailwind

colors: {
  custom: {
    50: '#86cee6',
    500: '#37b9db',
    950: '#000000',
  },
}

SCSS

$custom: #37b9db;
$custom-light: #86cee6;
$custom-dark: #000000;

JSON

{
  "hex": "#37b9db",
  "rgb": {
    "r": 55,
    "g": 185,
    "b": 219
  },
  "hsl": {
    "h": 192.439,
    "s": 69.492,
    "l": 53.725
  },
  "oklch": {
    "l": 0.73107,
    "c": 0.11864,
    "h": 219.6
  },
  "luminance": 0.40625
}

Semantic roles & 50–950 ramp

primary

#37B9DB

secondary

#DAA294

accent

#603BEC

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #37B9DB

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

Preview Lab → · Contrast checker → · Palette generator →