#37B3D7#37B3D7

#37B3D7 is a light, moderate cyan. Relative luminance 0.380; OKLCH L 71.5% C 0.117 H 221.8°. Best body text is #000000 at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#37B3D7
RGB	rgb(55, 179, 215)
HSL	hsl(194, 67%, 53%)
HSV	hsv(194, 74%, 84%)
CMYK	cmyk(74.4%, 16.7%, 0%, 15.7%)
CIE-LAB	lab(67.99, -21.75, -27.83)
CIE-LCH	lch(67.99, 35.32, 231.99°)
OKLab	oklab(71.51% -0.0872 -0.0779)
OKLCH	oklch(71.51% 0.117 221.8)
XYZ	xyz(29.9563, 37.9551, 70.0241)
Luminance	0.3796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B3D7 #D75B37

analogous

#37D7AB #37B3D7 #3763D7

triadic

#37B3D7 #D737B3 #B3D737

tetradic

#37B3D7 #AB37D7 #D75B37 #63D737

square

#37B3D7 #AB37D7 #D75B37 #63D737

split-complementary

#37B3D7 #D73763 #D7AB37

monochromatic

#19657B #238FAE #37B3D7 #6AC6E1 #9DDAEB

Accessibility & contrast

On white

2.44

#37B3D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.59

#37B3D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B3D7

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B3D7	#FFFFFF	#000000	##000000
##37B3D7	1.00	2.44	8.59	8.59
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.59	21.00	1.00	1.00
##000000	8.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EAFD9

Deuteranopia (green-blind)

#889FD7

Tritanopia (blue-blind)

#00BEBF

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #37b3d7;
/* rgb */ color: rgb(55, 179, 215);
/* oklch */ color: oklch(71.5% 0.117 221.8);

Tailwind

colors: {
  custom: {
    50: '#85cae3',
    500: '#37b3d7',
    950: '#000000',
  },
}

SCSS

$custom: #37b3d7;
$custom-light: #85cae3;
$custom-dark: #000000;

JSON

{
  "hex": "#37b3d7",
  "rgb": {
    "r": 55,
    "g": 179,
    "b": 215
  },
  "hsl": {
    "h": 193.5,
    "s": 66.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.71514,
    "c": 0.11688,
    "h": 221.8
  },
  "luminance": 0.37959
}

Semantic roles & 50–950 ramp

primary

#37B3D7

secondary

#D7A292

accent

#653EEA

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #37B3D7

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

Preview Lab → · Contrast checker → · Palette generator →