#37A5DA#37A5DA

#37A5DA is a light, vivid cyan. Relative luminance 0.328; OKLCH L 68.4% C 0.124 H 234.1°. Best body text is #000000 at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#37A5DA
RGB	rgb(55, 165, 218)
HSL	hsl(200, 69%, 54%)
HSV	hsv(200, 75%, 85%)
CMYK	cmyk(74.8%, 24.3%, 0%, 14.5%)
CIE-LAB	lab(63.98, -13.33, -35.68)
CIE-LCH	lch(63.98, 38.09, 249.51°)
OKLab	oklab(68.35% -0.0728 -0.1005)
OKLCH	oklch(68.35% 0.124 234.1)
XYZ	xyz(27.6805, 32.7812, 71.1846)
Luminance	0.3278 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A5DA #DA6C37

analogous

#37DABD #37A5DA #3753DA

triadic

#37A5DA #DA37A5 #A5DA37

tetradic

#37A5DA #BD37DA #DA6C37 #53DA37

square

#37A5DA #BD37DA #DA6C37 #53DA37

split-complementary

#37A5DA #DA3753 #DABD37

monochromatic

#185D7F #2183B3 #37A5DA #6BBCE4 #9ED3ED

Accessibility & contrast

On white

2.78

#37A5DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.56

#37A5DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A5DA

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A5DA	#FFFFFF	#000000	##000000
##37A5DA	1.00	2.78	7.56	7.56
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.56	21.00	1.00	1.00
##000000	7.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8BA4DC

Deuteranopia (green-blind)

#7594D9

Tritanopia (blue-blind)

#00B3B7

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #37a5da;
/* rgb */ color: rgb(55, 165, 218);
/* oklch */ color: oklch(68.4% 0.124 234.1);

Tailwind

colors: {
  custom: {
    50: '#84bfe5',
    500: '#37a5da',
    950: '#000000',
  },
}

SCSS

$custom: #37a5da;
$custom-light: #84bfe5;
$custom-dark: #000000;

JSON

{
  "hex": "#37a5da",
  "rgb": {
    "r": 55,
    "g": 165,
    "b": 218
  },
  "hsl": {
    "h": 199.509,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.68352,
    "c": 0.12409,
    "h": 234.1
  },
  "luminance": 0.32784
}

Semantic roles & 50–950 ramp

primary

#37A5DA

secondary

#D9AA93

accent

#753CEC

background

#F8FBFE

surface

#F0F7FC

border

#CBD0D5

text

#0C1216

muted

#7D8184

Preview Lab

Preview with #37A5DA

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

Preview Lab → · Contrast checker → · Palette generator →