#37A5BD#37A5BD

#37A5BD is a light, moderate cyan. Relative luminance 0.314; OKLCH L 67.1% C 0.102 H 215.4°. Best body text is #000000 at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#37A5BD
RGB	rgb(55, 165, 189)
HSL	hsl(191, 55%, 48%)
HSV	hsv(191, 71%, 74%)
CMYK	cmyk(70.9%, 12.7%, 0%, 25.9%)
CIE-LAB	lab(62.84, -22.86, -21.32)
CIE-LCH	lch(62.84, 31.26, 222.99°)
OKLab	oklab(67.06% -0.0835 -0.0594)
OKLCH	oklch(67.06% 0.103 215.4)
XYZ	xyz(24.2121, 31.3938, 52.9178)
Luminance	0.3140 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A5BD #BD4F37

analogous

#37BD92 #37A5BD #3762BD

triadic

#37A5BD #BD37A5 #A5BD37

tetradic

#37A5BD #9237BD #BD4F37 #62BD37

square

#37A5BD #9237BD #BD4F37 #62BD37

split-complementary

#37A5BD #BD3762 #BD9237

monochromatic

#1B525E #297C8E #37A5BD #60BDD1 #90D1DF

Accessibility & contrast

On white

2.88

#37A5BD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.28

#37A5BD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A5BD

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A5BD	#FFFFFF	#000000	##000000
##37A5BD	1.00	2.88	7.28	7.28
#FFFFFF	2.88	1.00	21.00	21.00
#000000	7.28	21.00	1.00	1.00
##000000	7.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A0BE

Deuteranopia (green-blind)

#8292BD

Tritanopia (blue-blind)

#00AEAC

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #37a5bd;
/* rgb */ color: rgb(55, 165, 189);
/* oklch */ color: oklch(67.1% 0.102 215.4);

Tailwind

colors: {
  custom: {
    50: '#80c0d1',
    500: '#37a5bd',
    950: '#000000',
  },
}

SCSS

$custom: #37a5bd;
$custom-light: #80c0d1;
$custom-dark: #000000;

JSON

{
  "hex": "#37a5bd",
  "rgb": {
    "r": 55,
    "g": 165,
    "b": 189
  },
  "hsl": {
    "h": 190.746,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.67057,
    "c": 0.1025,
    "h": 215.4
  },
  "luminance": 0.31397
}

Semantic roles & 50–950 ramp

primary

#37A5BD

secondary

#C99286

accent

#644ADE

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #37A5BD

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

Preview Lab → · Contrast checker → · Palette generator →