#37A8DA#37A8DA

#37A8DA is a light, vivid cyan. Relative luminance 0.339; OKLCH L 69.1% C 0.123 H 231.9°. Best body text is #000000 at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#37A8DA
RGB	rgb(55, 168, 218)
HSL	hsl(198, 69%, 54%)
HSV	hsv(198, 75%, 85%)
CMYK	cmyk(74.8%, 22.9%, 0%, 14.5%)
CIE-LAB	lab(64.86, -14.96, -34.31)
CIE-LCH	lch(64.86, 37.43, 246.44°)
OKLab	oklab(69.05% -0.0756 -0.0965)
OKLCH	oklch(69.05% 0.123 231.9)
XYZ	xyz(28.2280, 33.8761, 71.3671)
Luminance	0.3388 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A8DA #DA6937

analogous

#37DABA #37A8DA #3756DA

triadic

#37A8DA #DA37A8 #A8DA37

tetradic

#37A8DA #BA37DA #DA6937 #56DA37

square

#37A8DA #BA37DA #DA6937 #56DA37

split-complementary

#37A8DA #DA3756 #DABA37

monochromatic

#185F7F #2186B3 #37A8DA #6BBEE4 #9ED5ED

Accessibility & contrast

On white

2.70

#37A8DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.78

#37A8DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A8DA

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A8DA	#FFFFFF	#000000	##000000
##37A8DA	1.00	2.70	7.78	7.78
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.78	21.00	1.00	1.00
##000000	7.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA6DC

Deuteranopia (green-blind)

#7997D9

Tritanopia (blue-blind)

#00B6B9

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #37a8da;
/* rgb */ color: rgb(55, 168, 218);
/* oklch */ color: oklch(69.1% 0.123 231.9);

Tailwind

colors: {
  custom: {
    50: '#84c1e5',
    500: '#37a8da',
    950: '#000000',
  },
}

SCSS

$custom: #37a8da;
$custom-light: #84c1e5;
$custom-dark: #000000;

JSON

{
  "hex": "#37a8da",
  "rgb": {
    "r": 55,
    "g": 168,
    "b": 218
  },
  "hsl": {
    "h": 198.405,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.69054,
    "c": 0.12261,
    "h": 231.9
  },
  "luminance": 0.33879
}

Semantic roles & 50–950 ramp

primary

#37A8DA

secondary

#D9A993

accent

#723CEC

background

#F8FBFE

surface

#F0F7FC

border

#CBD0D5

text

#0C1215

muted

#7D8184

Preview Lab

Preview with #37A8DA

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

Preview Lab → · Contrast checker → · Palette generator →