#37AACC#37AACC

#37AACC is a light, moderate cyan. Relative luminance 0.339; OKLCH L 68.9% C 0.111 H 221.9°. Best body text is #000000 at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#37AACC
RGB	rgb(55, 170, 204)
HSL	hsl(194, 59%, 51%)
HSV	hsv(194, 73%, 80%)
CMYK	cmyk(73%, 16.7%, 0%, 20%)
CIE-LAB	lab(64.90, -20.64, -26.51)
CIE-LCH	lch(64.90, 33.60, 232.09°)
OKLab	oklab(68.9% -0.0826 -0.0741)
OKLCH	oklch(68.9% 0.111 221.9)
XYZ	xyz(26.8448, 33.9182, 62.2471)
Luminance	0.3392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37AACC #CC5937

analogous

#37CCA3 #37AACC #375FCC

triadic

#37AACC #CC37AA #AACC37

tetradic

#37AACC #A337CC #CC5937 #5FCC37

square

#37AACC #A337CC #CC5937 #5FCC37

split-complementary

#37AACC #CC375F #CCA337

monochromatic

#1C5A6D #28839E #37AACC #68BFD8 #99D3E5

Accessibility & contrast

On white

2.70

#37AACC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.78

#37AACC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37AACC

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37AACC	#FFFFFF	#000000	##000000
##37AACC	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)

#96A6CE

Deuteranopia (green-blind)

#8297CC

Tritanopia (blue-blind)

#00B5B5

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #37aacc;
/* rgb */ color: rgb(55, 170, 204);
/* oklch */ color: oklch(68.9% 0.111 221.9);

Tailwind

colors: {
  custom: {
    50: '#82c3db',
    500: '#37aacc',
    950: '#000000',
  },
}

SCSS

$custom: #37aacc;
$custom-light: #82c3db;
$custom-dark: #000000;

JSON

{
  "hex": "#37aacc",
  "rgb": {
    "r": 55,
    "g": 170,
    "b": 204
  },
  "hsl": {
    "h": 193.691,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.68896,
    "c": 0.11102,
    "h": 221.9
  },
  "luminance": 0.33921
}

Semantic roles & 50–950 ramp

primary

#37AACC

secondary

#D09D8E

accent

#6945E3

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #37AACC

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

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