#37A9CC#37A9CC

#37A9CC is a light, moderate cyan. Relative luminance 0.335; OKLCH L 68.7% C 0.111 H 222.7°. Best body text is #000000 at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#37A9CC
RGB	rgb(55, 169, 204)
HSL	hsl(194, 59%, 51%)
HSV	hsv(194, 73%, 80%)
CMYK	cmyk(73%, 17.2%, 0%, 20%)
CIE-LAB	lab(64.60, -20.12, -26.97)
CIE-LCH	lch(64.60, 33.65, 233.28°)
OKLab	oklab(68.66% -0.0816 -0.0755)
OKLCH	oklch(68.66% 0.111 222.7)
XYZ	xyz(26.6581, 33.5447, 62.1848)
Luminance	0.3355 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37A9CC #CC5A37

analogous

#37CCA4 #37A9CC #375ECC

triadic

#37A9CC #CC37A9 #A9CC37

tetradic

#37A9CC #A437CC #CC5A37 #5ECC37

square

#37A9CC #A437CC #CC5A37 #5ECC37

split-complementary

#37A9CC #CC375E #CCA437

monochromatic

#1C5A6D #28829E #37A9CC #68BED8 #99D3E5

Accessibility & contrast

On white

2.72

#37A9CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.71

#37A9CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A9CC

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37A9CC	#FFFFFF	#000000	##000000
##37A9CC	1.00	2.72	7.71	7.71
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.71	21.00	1.00	1.00
##000000	7.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A5CE

Deuteranopia (green-blind)

#8196CC

Tritanopia (blue-blind)

#00B4B4

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #37a9cc;
/* rgb */ color: rgb(55, 169, 204);
/* oklch */ color: oklch(68.7% 0.111 222.7);

Tailwind

colors: {
  custom: {
    50: '#82c2db',
    500: '#37a9cc',
    950: '#000000',
  },
}

SCSS

$custom: #37a9cc;
$custom-light: #82c2db;
$custom-dark: #000000;

JSON

{
  "hex": "#37a9cc",
  "rgb": {
    "r": 55,
    "g": 169,
    "b": 204
  },
  "hsl": {
    "h": 194.094,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.68657,
    "c": 0.11118,
    "h": 222.7
  },
  "luminance": 0.33548
}

Semantic roles & 50–950 ramp

primary

#37A9CC

secondary

#D09E8E

accent

#6A45E3

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #37A9CC

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

Preview Lab → · Contrast checker → · Palette generator →