#37B0CB#37B0CB

#37B0CB is a light, moderate cyan. Relative luminance 0.362; OKLCH L 70.3% C 0.110 H 216.1°. Best body text is #000000 at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#37B0CB
RGB	rgb(55, 176, 203)
HSL	hsl(191, 59%, 51%)
HSV	hsv(191, 73%, 80%)
CMYK	cmyk(72.9%, 13.3%, 0%, 20.4%)
CIE-LAB	lab(66.65, -24.05, -23.27)
CIE-LCH	lch(66.65, 33.47, 224.05°)
OKLab	oklab(70.29% -0.0889 -0.0649)
OKLCH	oklch(70.29% 0.11 216.1)
XYZ	xyz(27.8758, 36.1714, 62.0010)
Luminance	0.3618 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37B0CB #CB5237

analogous

#37CB9C #37B0CB #3766CB

triadic

#37B0CB #CB37B0 #B0CB37

tetradic

#37B0CB #9C37CB #CB5237 #66CB37

square

#37B0CB #9C37CB #CB5237 #66CB37

split-complementary

#37B0CB #CB3766 #CB9C37

monochromatic

#1C5D6C #29879C #37B0CB #68C3D8 #98D6E4

Accessibility & contrast

On white

2.55

#37B0CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.24

#37B0CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B0CB

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37B0CB	#FFFFFF	#000000	##000000
##37B0CB	1.00	2.55	8.24	8.24
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.24	21.00	1.00	1.00
##000000	8.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EABCD

Deuteranopia (green-blind)

#899CCB

Tritanopia (blue-blind)

#00BAB8

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #37b0cb;
/* rgb */ color: rgb(55, 176, 203);
/* oklch */ color: oklch(70.3% 0.110 216.1);

Tailwind

colors: {
  custom: {
    50: '#83c7da',
    500: '#37b0cb',
    950: '#000000',
  },
}

SCSS

$custom: #37b0cb;
$custom-light: #83c7da;
$custom-dark: #000000;

JSON

{
  "hex": "#37b0cb",
  "rgb": {
    "r": 55,
    "g": 176,
    "b": 203
  },
  "hsl": {
    "h": 190.946,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.70293,
    "c": 0.11008,
    "h": 216.1
  },
  "luminance": 0.36175
}

Semantic roles & 50–950 ramp

primary

#37B0CB

secondary

#D09A8E

accent

#6246E2

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1315

muted

#7D8283

Preview Lab

Preview with #37B0CB

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

Preview Lab → · Contrast checker → · Palette generator →