#37A5D2#37A5D2

#37A5D2 is a light, moderate cyan. Relative luminance 0.324; OKLCH L 68.0% C 0.117 H 229.7°. Best body text is #000000 at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#37A5D2
RGB	rgb(55, 165, 210)
HSL	hsl(197, 63%, 52%)
HSV	hsv(197, 74%, 82%)
CMYK	cmyk(73.8%, 21.4%, 0%, 17.6%)
CIE-LAB	lab(63.65, -16.02, -31.77)
CIE-LCH	lch(63.65, 35.58, 243.23°)
OKLab	oklab(67.98% -0.0756 -0.0892)
OKLCH	oklch(67.98% 0.117 229.7)
XYZ	xyz(26.6588, 32.3725, 65.8038)
Luminance	0.3238 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A5D2 #D26437

analogous

#37D2B1 #37A5D2 #3758D2

triadic

#37A5D2 #D237A5 #A5D237

tetradic

#37A5D2 #B137D2 #D26437 #58D237

square

#37A5D2 #B137D2 #D26437 #58D237

split-complementary

#37A5D2 #D23758 #D2B137

monochromatic

#1A5A74 #2581A6 #37A5D2 #69BBDD #9BD2E8

Accessibility & contrast

On white

2.81

#37A5D2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.48

#37A5D2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A5D2

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A5D2	#FFFFFF	#000000	##000000
##37A5D2	1.00	2.81	7.48	7.48
#FFFFFF	2.81	1.00	21.00	21.00
#000000	7.48	21.00	1.00	1.00
##000000	7.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA3D4

Deuteranopia (green-blind)

#7994D1

Tritanopia (blue-blind)

#00B1B4

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #37a5d2;
/* rgb */ color: rgb(55, 165, 210);
/* oklch */ color: oklch(68.0% 0.117 229.7);

Tailwind

colors: {
  custom: {
    50: '#83bfe0',
    500: '#37a5d2',
    950: '#000000',
  },
}

SCSS

$custom: #37a5d2;
$custom-light: #83bfe0;
$custom-dark: #000000;

JSON

{
  "hex": "#37a5d2",
  "rgb": {
    "r": 55,
    "g": 165,
    "b": 210
  },
  "hsl": {
    "h": 197.419,
    "s": 63.265,
    "l": 51.961
  },
  "oklch": {
    "l": 0.67976,
    "c": 0.11692,
    "h": 229.7
  },
  "luminance": 0.32376
}

Semantic roles & 50–950 ramp

primary

#37A5D2

secondary

#D4A490

accent

#7141E6

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #37A5D2

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

Preview Lab → · Contrast checker → · Palette generator →