#37A5BC#37A5BC

#37A5BC is a light, moderate cyan. Relative luminance 0.314; OKLCH L 67.0% C 0.102 H 214.6°. Best body text is #000000 at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#37A5BC
RGB	rgb(55, 165, 188)
HSL	hsl(190, 55%, 48%)
HSV	hsv(190, 71%, 74%)
CMYK	cmyk(70.7%, 12.2%, 0%, 26.3%)
CIE-LAB	lab(62.80, -23.18, -20.81)
CIE-LCH	lch(62.80, 31.15, 221.92°)
OKLab	oklab(67.02% -0.0839 -0.058)
OKLCH	oklch(67.02% 0.102 214.6)
XYZ	xyz(24.1040, 31.3506, 52.3481)
Luminance	0.3135 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A5BC #BC4E37

analogous

#37BC91 #37A5BC #3762BC

triadic

#37A5BC #BC37A5 #A5BC37

tetradic

#37A5BC #9137BC #BC4E37 #62BC37

square

#37A5BC #9137BC #BC4E37 #62BC37

split-complementary

#37A5BC #BC3762 #BC9137

monochromatic

#1B525D #297B8D #37A5BC #60BDD0 #8FD1DE

Accessibility & contrast

On white

2.89

#37A5BC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.27

#37A5BC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A5BC

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A5BC	#FFFFFF	#000000	##000000
##37A5BC	1.00	2.89	7.27	7.27
#FFFFFF	2.89	1.00	21.00	21.00
#000000	7.27	21.00	1.00	1.00
##000000	7.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A0BD

Deuteranopia (green-blind)

#8292BC

Tritanopia (blue-blind)

#00AEAC

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #37a5bc;
/* rgb */ color: rgb(55, 165, 188);
/* oklch */ color: oklch(67.0% 0.102 214.6);

Tailwind

colors: {
  custom: {
    50: '#80c0d0',
    500: '#37a5bc',
    950: '#000000',
  },
}

SCSS

$custom: #37a5bc;
$custom-light: #80c0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#37a5bc",
  "rgb": {
    "r": 55,
    "g": 165,
    "b": 188
  },
  "hsl": {
    "h": 190.376,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.67016,
    "c": 0.102,
    "h": 214.6
  },
  "luminance": 0.31353
}

Semantic roles & 50–950 ramp

primary

#37A5BC

secondary

#C99186

accent

#634ADE

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #37A5BC

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

Preview Lab → · Contrast checker → · Palette generator →