#37A8D9#37A8D9

#37A8D9 is a light, vivid cyan. Relative luminance 0.338; OKLCH L 69.0% C 0.122 H 231.4°. Best body text is #000000 at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#37A8D9
RGB	rgb(55, 168, 217)
HSL	hsl(198, 68%, 53%)
HSV	hsv(198, 75%, 85%)
CMYK	cmyk(74.7%, 22.6%, 0%, 14.9%)
CIE-LAB	lab(64.82, -15.29, -33.82)
CIE-LCH	lch(64.82, 37.12, 245.67°)
OKLab	oklab(69.01% -0.0759 -0.0951)
OKLCH	oklch(69.01% 0.122 231.4)
XYZ	xyz(28.0975, 33.8239, 70.6800)
Luminance	0.3383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A8D9 #D96837

analogous

#37D9B9 #37A8D9 #3757D9

triadic

#37A8D9 #D937A8 #A8D937

tetradic

#37A8D9 #B937D9 #D96837 #57D937

square

#37A8D9 #B937D9 #D96837 #57D937

split-complementary

#37A8D9 #D93757 #D9B937

monochromatic

#185F7E #2286B1 #37A8D9 #6ABEE3 #9ED5ED

Accessibility & contrast

On white

2.70

#37A8D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.77

#37A8D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A8D9

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A8D9	#FFFFFF	#000000	##000000
##37A8D9	1.00	2.70	7.77	7.77
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.77	21.00	1.00	1.00
##000000	7.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA6DB

Deuteranopia (green-blind)

#7996D8

Tritanopia (blue-blind)

#00B5B8

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #37a8d9;
/* rgb */ color: rgb(55, 168, 217);
/* oklch */ color: oklch(69.0% 0.122 231.4);

Tailwind

colors: {
  custom: {
    50: '#84c1e5',
    500: '#37a8d9',
    950: '#000000',
  },
}

SCSS

$custom: #37a8d9;
$custom-light: #84c1e5;
$custom-dark: #000000;

JSON

{
  "hex": "#37a8d9",
  "rgb": {
    "r": 55,
    "g": 168,
    "b": 217
  },
  "hsl": {
    "h": 198.148,
    "s": 68.067,
    "l": 53.333
  },
  "oklch": {
    "l": 0.69007,
    "c": 0.12173,
    "h": 231.4
  },
  "luminance": 0.33827
}

Semantic roles & 50–950 ramp

primary

#37A8D9

secondary

#D9A893

accent

#723DEB

background

#F8FBFE

surface

#F0F7FC

border

#CBD0D5

text

#0C1215

muted

#7D8184

Preview Lab

Preview with #37A8D9

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

Preview Lab → · Contrast checker → · Palette generator →