#37B1CD#37B1CD

#37B1CD is a light, moderate cyan. Relative luminance 0.367; OKLCH L 70.6% C 0.111 H 216.7°. Best body text is #000000 at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#37B1CD
RGB	rgb(55, 177, 205)
HSL	hsl(191, 60%, 51%)
HSV	hsv(191, 73%, 80%)
CMYK	cmyk(73.2%, 13.7%, 0%, 19.6%)
CIE-LAB	lab(67.02, -23.93, -23.81)
CIE-LCH	lch(67.02, 33.75, 224.86°)
OKLab	oklab(70.62% -0.0891 -0.0664)
OKLCH	oklch(70.62% 0.111 216.7)
XYZ	xyz(28.3125, 36.6609, 63.3299)
Luminance	0.3666 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B1CD #CD5337

analogous

#37CD9E #37B1CD #3766CD

triadic

#37B1CD #CD37B1 #B1CD37

tetradic

#37B1CD #9E37CD #CD5337 #66CD37

square

#37B1CD #9E37CD #CD5337 #66CD37

split-complementary

#37B1CD #CD3766 #CD9E37

monochromatic

#1C5F6E #28899F #37B1CD #68C4D9 #99D7E5

Accessibility & contrast

On white

2.52

#37B1CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.33

#37B1CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B1CD

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B1CD	#FFFFFF	#000000	##000000
##37B1CD	1.00	2.52	8.33	8.33
#FFFFFF	2.52	1.00	21.00	21.00
#000000	8.33	21.00	1.00	1.00
##000000	8.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EACCF

Deuteranopia (green-blind)

#8A9DCD

Tritanopia (blue-blind)

#00BBBA

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #37b1cd;
/* rgb */ color: rgb(55, 177, 205);
/* oklch */ color: oklch(70.6% 0.111 216.7);

Tailwind

colors: {
  custom: {
    50: '#83c8dc',
    500: '#37b1cd',
    950: '#000000',
  },
}

SCSS

$custom: #37b1cd;
$custom-light: #83c8dc;
$custom-dark: #000000;

JSON

{
  "hex": "#37b1cd",
  "rgb": {
    "r": 55,
    "g": 177,
    "b": 205
  },
  "hsl": {
    "h": 191.2,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.70615,
    "c": 0.11113,
    "h": 216.7
  },
  "luminance": 0.36664
}

Semantic roles & 50–950 ramp

primary

#37B1CD

secondary

#D19B8F

accent

#6245E3

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0C1315

muted

#7D8283

Preview Lab

Preview with #37B1CD

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

Preview Lab → · Contrast checker → · Palette generator →