#37A4CF#37A4CF

#37A4CF is a light, moderate cyan. Relative luminance 0.319; OKLCH L 67.6% C 0.115 H 228.8°. Best body text is #000000 at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#37A4CF
RGB	rgb(55, 164, 207)
HSL	hsl(197, 61%, 51%)
HSV	hsv(197, 73%, 81%)
CMYK	cmyk(73.4%, 20.8%, 0%, 18.8%)
CIE-LAB	lab(63.23, -16.49, -30.75)
CIE-LCH	lch(63.23, 34.89, 241.80°)
OKLab	oklab(67.6% -0.0757 -0.0863)
OKLCH	oklch(67.6% 0.115 228.8)
XYZ	xyz(26.1089, 31.8651, 63.7939)
Luminance	0.3187 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A4CF #CF6237

analogous

#37CFAE #37A4CF #3758CF

triadic

#37A4CF #CF37A4 #A4CF37

tetradic

#37A4CF #AE37CF #CF6237 #58CF37

square

#37A4CF #AE37CF #CF6237 #58CF37

split-complementary

#37A4CF #CF3758 #CFAE37

monochromatic

#1B5871 #277FA2 #37A4CF #68BADB #9AD1E7

Accessibility & contrast

On white

2.85

#37A4CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.37

#37A4CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A4CF

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A4CF	#FFFFFF	#000000	##000000
##37A4CF	1.00	2.85	7.37	7.37
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.37	21.00	1.00	1.00
##000000	7.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA1D1

Deuteranopia (green-blind)

#7993CE

Tritanopia (blue-blind)

#00B0B2

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #37a4cf;
/* rgb */ color: rgb(55, 164, 207);
/* oklch */ color: oklch(67.6% 0.115 228.8);

Tailwind

colors: {
  custom: {
    50: '#82bfdd',
    500: '#37a4cf',
    950: '#000000',
  },
}

SCSS

$custom: #37a4cf;
$custom-light: #82bfdd;
$custom-dark: #000000;

JSON

{
  "hex": "#37a4cf",
  "rgb": {
    "r": 55,
    "g": 164,
    "b": 207
  },
  "hsl": {
    "h": 196.974,
    "s": 61.29,
    "l": 51.373
  },
  "oklch": {
    "l": 0.67601,
    "c": 0.11478,
    "h": 228.8
  },
  "luminance": 0.31868
}

Semantic roles & 50–950 ramp

primary

#37A4CF

secondary

#D2A28F

accent

#7143E4

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #37A4CF

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

Preview Lab → · Contrast checker → · Palette generator →