#37B1D3#37B1D3

#37B1D3 is a light, moderate cyan. Relative luminance 0.370; OKLCH L 70.9% C 0.115 H 220.8°. Best body text is #000000 at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#37B1D3
RGB	rgb(55, 177, 211)
HSL	hsl(193, 64%, 52%)
HSV	hsv(193, 74%, 83%)
CMYK	cmyk(73.9%, 16.1%, 0%, 17.3%)
CIE-LAB	lab(67.24, -22.01, -26.77)
CIE-LCH	lch(67.24, 34.66, 230.58°)
OKLab	oklab(70.87% -0.0868 -0.0749)
OKLCH	oklch(70.87% 0.115 220.8)
XYZ	xyz(29.0507, 36.9562, 67.2176)
Luminance	0.3696 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B1D3 #D35937

analogous

#37D3A7 #37B1D3 #3763D3

triadic

#37B1D3 #D337B1 #B1D337

tetradic

#37B1D3 #A737D3 #D35937 #63D337

square

#37B1D3 #A737D3 #D35937 #63D337

split-complementary

#37B1D3 #D33763 #D3A737

monochromatic

#1A6276 #258BA8 #37B1D3 #69C5DE #9BD8E9

Accessibility & contrast

On white

2.50

#37B1D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.39

#37B1D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B1D3

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B1D3	#FFFFFF	#000000	##000000
##37B1D3	1.00	2.50	8.39	8.39
#FFFFFF	2.50	1.00	21.00	21.00
#000000	8.39	21.00	1.00	1.00
##000000	8.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DACD5

Deuteranopia (green-blind)

#879DD3

Tritanopia (blue-blind)

#00BCBC

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #37b1d3;
/* rgb */ color: rgb(55, 177, 211);
/* oklch */ color: oklch(70.9% 0.115 220.8);

Tailwind

colors: {
  custom: {
    50: '#84c8e0',
    500: '#37b1d3',
    950: '#000000',
  },
}

SCSS

$custom: #37b1d3;
$custom-light: #84c8e0;
$custom-dark: #000000;

JSON

{
  "hex": "#37b1d3",
  "rgb": {
    "r": 55,
    "g": 177,
    "b": 211
  },
  "hsl": {
    "h": 193.077,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.70868,
    "c": 0.11459,
    "h": 220.8
  },
  "luminance": 0.3696
}

Semantic roles & 50–950 ramp

primary

#37B1D3

secondary

#D5A091

accent

#6541E7

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0C1315

muted

#7D8283

Preview Lab

Preview with #37B1D3

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

Preview Lab → · Contrast checker → · Palette generator →