#37B5DA#37B5DA

#37B5DA is a light, moderate cyan. Relative luminance 0.389; OKLCH L 72.1% C 0.119 H 222.1°. Best body text is #000000 at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#37B5DA
RGB	rgb(55, 181, 218)
HSL	hsl(194, 69%, 54%)
HSV	hsv(194, 75%, 85%)
CMYK	cmyk(74.8%, 17%, 0%, 14.5%)
CIE-LAB	lab(68.69, -21.81, -28.39)
CIE-LCH	lch(68.69, 35.80, 232.47°)
OKLab	oklab(72.12% -0.0879 -0.0795)
OKLCH	oklch(72.12% 0.119 222.1)
XYZ	xyz(30.7490, 38.9182, 72.2075)
Luminance	0.3892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B5DA #DA5C37

analogous

#37DAAE #37B5DA #3763DA

triadic

#37B5DA #DA37B5 #B5DA37

tetradic

#37B5DA #AE37DA #DA5C37 #63DA37

square

#37B5DA #AE37DA #DA5C37 #63DA37

split-complementary

#37B5DA #DA3763 #DAAE37

monochromatic

#18687F #2192B3 #37B5DA #6BC8E4 #9EDBED

Accessibility & contrast

On white

2.39

#37B5DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.78

#37B5DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B5DA

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B5DA	#FFFFFF	#000000	##000000
##37B5DA	1.00	2.39	8.78	8.78
#FFFFFF	2.39	1.00	21.00	21.00
#000000	8.78	21.00	1.00	1.00
##000000	8.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB1DC

Deuteranopia (green-blind)

#89A1DA

Tritanopia (blue-blind)

#00C1C1

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #37b5da;
/* rgb */ color: rgb(55, 181, 218);
/* oklch */ color: oklch(72.1% 0.119 222.1);

Tailwind

colors: {
  custom: {
    50: '#85cbe5',
    500: '#37b5da',
    950: '#000000',
  },
}

SCSS

$custom: #37b5da;
$custom-light: #85cbe5;
$custom-dark: #000000;

JSON

{
  "hex": "#37b5da",
  "rgb": {
    "r": 55,
    "g": 181,
    "b": 218
  },
  "hsl": {
    "h": 193.62,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.72117,
    "c": 0.11853,
    "h": 222.1
  },
  "luminance": 0.38922
}

Semantic roles & 50–950 ramp

primary

#37B5DA

secondary

#D9A393

accent

#643CEC

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #37B5DA

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

Preview Lab → · Contrast checker → · Palette generator →