#37A4BB#37A4BB

#37A4BB is a light, moderate cyan. Relative luminance 0.310; OKLCH L 66.7% C 0.101 H 214.8°. Best body text is #000000 at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#37A4BB
RGB	rgb(55, 164, 187)
HSL	hsl(190, 55%, 47%)
HSV	hsv(190, 71%, 73%)
CMYK	cmyk(70.6%, 12.3%, 0%, 26.7%)
CIE-LAB	lab(62.46, -22.98, -20.77)
CIE-LCH	lch(62.46, 30.98, 222.10°)
OKLab	oklab(66.73% -0.0833 -0.0578)
OKLCH	oklch(66.73% 0.101 214.8)
XYZ	xyz(23.8169, 30.9483, 51.7225)
Luminance	0.3095 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A4BB #BB4E37

analogous

#37BB90 #37A4BB #3762BB

triadic

#37A4BB #BB37A4 #A4BB37

tetradic

#37A4BB #9037BB #BB4E37 #62BB37

square

#37A4BB #9037BB #BB4E37 #62BB37

split-complementary

#37A4BB #BB3762 #BB9037

monochromatic

#1B515C #297B8C #37A4BB #5FBCD0 #8ED0DE

Accessibility & contrast

On white

2.92

#37A4BB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.19

#37A4BB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A4BB

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A4BB	#FFFFFF	#000000	##000000
##37A4BB	1.00	2.92	7.19	7.19
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.19	21.00	1.00	1.00
##000000	7.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#949FBC

Deuteranopia (green-blind)

#8191BB

Tritanopia (blue-blind)

#00ADAB

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #37a4bb;
/* rgb */ color: rgb(55, 164, 187);
/* oklch */ color: oklch(66.7% 0.101 214.8);

Tailwind

colors: {
  custom: {
    50: '#80bfcf',
    500: '#37a4bb',
    950: '#000000',
  },
}

SCSS

$custom: #37a4bb;
$custom-light: #80bfcf;
$custom-dark: #000000;

JSON

{
  "hex": "#37a4bb",
  "rgb": {
    "r": 55,
    "g": 164,
    "b": 187
  },
  "hsl": {
    "h": 190.455,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.66732,
    "c": 0.10143,
    "h": 214.8
  },
  "luminance": 0.30951
}

Semantic roles & 50–950 ramp

primary

#37A4BB

secondary

#C99185

accent

#644ADE

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0B1213

muted

#7C8182

Preview Lab

Preview with #37A4BB

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

Preview Lab → · Contrast checker → · Palette generator →