#37A4BD#37A4BD

#37A4BD is a light, moderate cyan. Relative luminance 0.310; OKLCH L 66.8% C 0.102 H 216.3°. Best body text is #000000 at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#37A4BD
RGB	rgb(55, 164, 189)
HSL	hsl(191, 55%, 48%)
HSV	hsv(191, 71%, 74%)
CMYK	cmyk(70.9%, 13.2%, 0%, 25.9%)
CIE-LAB	lab(62.54, -22.35, -21.78)
CIE-LCH	lch(62.54, 31.20, 224.26°)
OKLab	oklab(66.82% -0.0825 -0.0607)
OKLCH	oklch(66.82% 0.102 216.3)
XYZ	xyz(24.0325, 31.0345, 52.8579)
Luminance	0.3104 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A4BD #BD5037

analogous

#37BD93 #37A4BD #3761BD

triadic

#37A4BD #BD37A4 #A4BD37

tetradic

#37A4BD #9337BD #BD5037 #61BD37

square

#37A4BD #9337BD #BD5037 #61BD37

split-complementary

#37A4BD #BD3761 #BD9337

monochromatic

#1B525E #297B8E #37A4BD #60BCD1 #90D0DF

Accessibility & contrast

On white

2.91

#37A4BD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.21

#37A4BD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A4BD

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A4BD	#FFFFFF	#000000	##000000
##37A4BD	1.00	2.91	7.21	7.21
#FFFFFF	2.91	1.00	21.00	21.00
#000000	7.21	21.00	1.00	1.00
##000000	7.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#939FBE

Deuteranopia (green-blind)

#8091BD

Tritanopia (blue-blind)

#00ADAC

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #37a4bd;
/* rgb */ color: rgb(55, 164, 189);
/* oklch */ color: oklch(66.8% 0.102 216.3);

Tailwind

colors: {
  custom: {
    50: '#80bfd1',
    500: '#37a4bd',
    950: '#000000',
  },
}

SCSS

$custom: #37a4bd;
$custom-light: #80bfd1;
$custom-dark: #000000;

JSON

{
  "hex": "#37a4bd",
  "rgb": {
    "r": 55,
    "g": 164,
    "b": 189
  },
  "hsl": {
    "h": 191.194,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.66815,
    "c": 0.10245,
    "h": 216.3
  },
  "luminance": 0.31037
}

Semantic roles & 50–950 ramp

primary

#37A4BD

secondary

#C99386

accent

#654ADE

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #37A4BD

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

Preview Lab → · Contrast checker → · Palette generator →