#37B4DA#37B4DA

#37B4DA is a light, moderate cyan. Relative luminance 0.385; OKLCH L 71.9% C 0.119 H 222.9°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#37B4DA
RGB	rgb(55, 180, 218)
HSL	hsl(194, 69%, 54%)
HSV	hsv(194, 75%, 85%)
CMYK	cmyk(74.8%, 17.4%, 0%, 14.5%)
CIE-LAB	lab(68.40, -21.29, -28.84)
CIE-LCH	lch(68.40, 35.85, 233.56°)
OKLab	oklab(71.88% -0.087 -0.0808)
OKLCH	oklch(71.88% 0.119 222.9)
XYZ	xyz(30.5464, 38.5130, 72.1399)
Luminance	0.3852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B4DA #DA5D37

analogous

#37DAAE #37B4DA #3762DA

triadic

#37B4DA #DA37B4 #B4DA37

tetradic

#37B4DA #AE37DA #DA5D37 #62DA37

square

#37B4DA #AE37DA #DA5D37 #62DA37

split-complementary

#37B4DA #DA3762 #DAAE37

monochromatic

#18677F #2191B3 #37B4DA #6BC7E4 #9EDBED

Accessibility & contrast

On white

2.41

#37B4DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#37B4DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B4DA

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B4DA	#FFFFFF	#000000	##000000
##37B4DA	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB0DC

Deuteranopia (green-blind)

#88A0DA

Tritanopia (blue-blind)

#00C0C0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #37b4da;
/* rgb */ color: rgb(55, 180, 218);
/* oklch */ color: oklch(71.9% 0.119 222.9);

Tailwind

colors: {
  custom: {
    50: '#85cae5',
    500: '#37b4da',
    950: '#000000',
  },
}

SCSS

$custom: #37b4da;
$custom-light: #85cae5;
$custom-dark: #000000;

JSON

{
  "hex": "#37b4da",
  "rgb": {
    "r": 55,
    "g": 180,
    "b": 218
  },
  "hsl": {
    "h": 193.988,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.71881,
    "c": 0.11871,
    "h": 222.9
  },
  "luminance": 0.38517
}

Semantic roles & 50–950 ramp

primary

#37B4DA

secondary

#D9A493

accent

#653CEC

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #37B4DA

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

Preview Lab → · Contrast checker → · Palette generator →