#37A3BF#37A3BF

#37A3BF is a light, moderate cyan. Relative luminance 0.308; OKLCH L 66.7% C 0.104 H 218.8°. Best body text is #000000 at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#37A3BF
RGB	rgb(55, 163, 191)
HSL	hsl(192, 55%, 48%)
HSV	hsv(192, 71%, 75%)
CMYK	cmyk(71.2%, 14.7%, 0%, 25.1%)
CIE-LAB	lab(62.31, -21.19, -23.25)
CIE-LCH	lch(62.31, 31.45, 227.65°)
OKLab	oklab(66.66% -0.0807 -0.0649)
OKLCH	oklch(66.66% 0.104 218.8)
XYZ	xyz(24.0728, 30.7654, 53.9497)
Luminance	0.3077 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A3BF #BF5337

analogous

#37BF97 #37A3BF #375FBF

triadic

#37A3BF #BF37A3 #A3BF37

tetradic

#37A3BF #9737BF #BF5337 #5FBF37

square

#37A3BF #9737BF #BF5337 #5FBF37

split-complementary

#37A3BF #BF375F #BF9737

monochromatic

#1C5260 #297A8F #37A3BF #62BBD2 #91CFDF

Accessibility & contrast

On white

2.94

#37A3BF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.15

#37A3BF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A3BF

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A3BF	#FFFFFF	#000000	##000000
##37A3BF	1.00	2.94	7.15	7.15
#FFFFFF	2.94	1.00	21.00	21.00
#000000	7.15	21.00	1.00	1.00
##000000	7.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#919EC1

Deuteranopia (green-blind)

#7F91BF

Tritanopia (blue-blind)

#00ACAC

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #37a3bf;
/* rgb */ color: rgb(55, 163, 191);
/* oklch */ color: oklch(66.7% 0.104 218.8);

Tailwind

colors: {
  custom: {
    50: '#80bed2',
    500: '#37a3bf',
    950: '#000000',
  },
}

SCSS

$custom: #37a3bf;
$custom-light: #80bed2;
$custom-dark: #000000;

JSON

{
  "hex": "#37a3bf",
  "rgb": {
    "r": 55,
    "g": 163,
    "b": 191
  },
  "hsl": {
    "h": 192.353,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.66656,
    "c": 0.10356,
    "h": 218.8
  },
  "luminance": 0.30768
}

Semantic roles & 50–950 ramp

primary

#37A3BF

secondary

#CA9588

accent

#6849DF

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #37A3BF

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

Preview Lab → · Contrast checker → · Palette generator →