#37B9D7#37B9D7

#37B9D7 is a light, moderate cyan. Relative luminance 0.404; OKLCH L 72.9% C 0.116 H 217.0°. Best body text is #000000 at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#37B9D7
RGB	rgb(55, 185, 215)
HSL	hsl(191, 67%, 53%)
HSV	hsv(191, 74%, 84%)
CMYK	cmyk(74.4%, 14%, 0%, 15.7%)
CIE-LAB	lab(69.76, -24.81, -25.10)
CIE-LCH	lch(69.76, 35.29, 225.34°)
OKLab	oklab(72.94% -0.0929 -0.0701)
OKLCH	oklch(72.94% 0.116 217)
XYZ	xyz(31.1851, 40.4127, 70.4337)
Luminance	0.4042 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B9D7 #D75537

analogous

#37D7A5 #37B9D7 #3769D7

triadic

#37B9D7 #D737B9 #B9D737

tetradic

#37B9D7 #A537D7 #D75537 #69D737

square

#37B9D7 #A537D7 #D75537 #69D737

split-complementary

#37B9D7 #D73769 #D7A537

monochromatic

#19697B #2394AE #37B9D7 #6ACBE1 #9DDDEB

Accessibility & contrast

On white

2.31

#37B9D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.08

#37B9D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B9D7

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B9D7	#FFFFFF	#000000	##000000
##37B9D7	1.00	2.31	9.08	9.08
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.08	21.00	1.00	1.00
##000000	9.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B3D9

Deuteranopia (green-blind)

#8FA4D7

Tritanopia (blue-blind)

#00C4C2

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #37b9d7;
/* rgb */ color: rgb(55, 185, 215);
/* oklch */ color: oklch(72.9% 0.116 217.0);

Tailwind

colors: {
  custom: {
    50: '#85cee3',
    500: '#37b9d7',
    950: '#000000',
  },
}

SCSS

$custom: #37b9d7;
$custom-light: #85cee3;
$custom-dark: #000000;

JSON

{
  "hex": "#37b9d7",
  "rgb": {
    "r": 55,
    "g": 185,
    "b": 215
  },
  "hsl": {
    "h": 191.25,
    "s": 66.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.72941,
    "c": 0.11639,
    "h": 217
  },
  "luminance": 0.40416
}

Semantic roles & 50–950 ramp

primary

#37B9D7

secondary

#D79F92

accent

#5E3EEA

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #37B9D7

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

Preview Lab → · Contrast checker → · Palette generator →