#37B1DA#37B1DA

#37B1DA is a light, moderate cyan. Relative luminance 0.373; OKLCH L 71.2% C 0.119 H 225.2°. Best body text is #000000 at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#37B1DA
RGB	rgb(55, 177, 218)
HSL	hsl(195, 69%, 54%)
HSV	hsv(195, 75%, 85%)
CMYK	cmyk(74.8%, 18.8%, 0%, 14.5%)
CIE-LAB	lab(67.51, -19.73, -30.21)
CIE-LCH	lch(67.51, 36.08, 236.84°)
OKLab	oklab(71.17% -0.0841 -0.0847)
OKLCH	oklch(71.17% 0.119 225.2)
XYZ	xyz(29.9474, 37.3149, 71.9402)
Luminance	0.3732 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B1DA #DA6037

analogous

#37DAB1 #37B1DA #375FDA

triadic

#37B1DA #DA37B1 #B1DA37

tetradic

#37B1DA #B137DA #DA6037 #5FDA37

square

#37B1DA #B137DA #DA6037 #5FDA37

split-complementary

#37B1DA #DA375F #DAB137

monochromatic

#18657F #218EB3 #37B1DA #6BC5E4 #9ED9ED

Accessibility & contrast

On white

2.48

#37B1DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.46

#37B1DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B1DA

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B1DA	#FFFFFF	#000000	##000000
##37B1DA	1.00	2.48	8.46	8.46
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.46	21.00	1.00	1.00
##000000	8.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AADDC

Deuteranopia (green-blind)

#849EDA

Tritanopia (blue-blind)

#00BDBE

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #37b1da;
/* rgb */ color: rgb(55, 177, 218);
/* oklch */ color: oklch(71.2% 0.119 225.2);

Tailwind

colors: {
  custom: {
    50: '#85c8e5',
    500: '#37b1da',
    950: '#000000',
  },
}

SCSS

$custom: #37b1da;
$custom-light: #85c8e5;
$custom-dark: #000000;

JSON

{
  "hex": "#37b1da",
  "rgb": {
    "r": 55,
    "g": 177,
    "b": 218
  },
  "hsl": {
    "h": 195.092,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.71172,
    "c": 0.11937,
    "h": 225.2
  },
  "luminance": 0.37318
}

Semantic roles & 50–950 ramp

primary

#37B1DA

secondary

#D9A593

accent

#683CEC

background

#F8FCFE

surface

#F0F8FC

border

#CBD1D5

text

#0D1315

muted

#7D8284

Preview Lab

Preview with #37B1DA

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

Preview Lab → · Contrast checker → · Palette generator →