#37A4BC#37A4BC

#37A4BC is a light, moderate cyan. Relative luminance 0.310; OKLCH L 66.8% C 0.102 H 215.6°. Best body text is #000000 at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#37A4BC
RGB	rgb(55, 164, 188)
HSL	hsl(191, 55%, 48%)
HSV	hsv(191, 71%, 74%)
CMYK	cmyk(70.7%, 12.8%, 0%, 26.3%)
CIE-LAB	lab(62.50, -22.67, -21.27)
CIE-LCH	lch(62.50, 31.09, 223.19°)
OKLab	oklab(66.77% -0.0829 -0.0593)
OKLCH	oklch(66.77% 0.102 215.6)
XYZ	xyz(23.9243, 30.9912, 52.2882)
Luminance	0.3099 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A4BC #BC4F37

analogous

#37BC91 #37A4BC #3761BC

triadic

#37A4BC #BC37A4 #A4BC37

tetradic

#37A4BC #9137BC #BC4F37 #61BC37

square

#37A4BC #9137BC #BC4F37 #61BC37

split-complementary

#37A4BC #BC3761 #BC9137

monochromatic

#1B515D #297B8D #37A4BC #60BCD0 #8FD0DE

Accessibility & contrast

On white

2.92

#37A4BC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.20

#37A4BC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A4BC

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A4BC	#FFFFFF	#000000	##000000
##37A4BC	1.00	2.92	7.20	7.20
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.20	21.00	1.00	1.00
##000000	7.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#939FBD

Deuteranopia (green-blind)

#8191BC

Tritanopia (blue-blind)

#00ADAB

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #37a4bc;
/* rgb */ color: rgb(55, 164, 188);
/* oklch */ color: oklch(66.8% 0.102 215.6);

Tailwind

colors: {
  custom: {
    50: '#80bfd0',
    500: '#37a4bc',
    950: '#000000',
  },
}

SCSS

$custom: #37a4bc;
$custom-light: #80bfd0;
$custom-dark: #000000;

JSON

{
  "hex": "#37a4bc",
  "rgb": {
    "r": 55,
    "g": 164,
    "b": 188
  },
  "hsl": {
    "h": 190.827,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.66773,
    "c": 0.10193,
    "h": 215.6
  },
  "luminance": 0.30994
}

Semantic roles & 50–950 ramp

primary

#37A4BC

secondary

#C99286

accent

#644ADE

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #37A4BC

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

Preview Lab → · Contrast checker → · Palette generator →