#37819B#37819B

#37819B is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.8% C 0.083 H 224.3°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#37819B
RGB	rgb(55, 129, 155)
HSL	hsl(196, 48%, 41%)
HSV	hsv(196, 65%, 61%)
CMYK	cmyk(64.5%, 16.8%, 0%, 39.2%)
CIE-LAB	lab(50.54, -14.60, -20.74)
CIE-LCH	lch(50.54, 25.36, 234.86°)
OKLab	oklab(56.77% -0.0592 -0.0578)
OKLCH	oklch(56.77% 0.083 224.3)
XYZ	xyz(15.3398, 18.8777, 33.8393)
Luminance	0.1888 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37819B #9B5137

analogous

#379B83 #37819B #374F9B

triadic

#37819B #9B3781 #819B37

tetradic

#37819B #83379B #9B5137 #4F9B37

square

#37819B #83379B #9B5137 #4F9B37

split-complementary

#37819B #9B374F #9B8337

monochromatic

#173641 #275B6E #37819B #4FA3C0 #7CBAD0

Accessibility & contrast

On white

4.40

#37819B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#37819B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #37819B

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37819B	#FFFFFF	#000000	##000000
##37819B	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#727E9C

Deuteranopia (green-blind)

#64749B

Tritanopia (blue-blind)

#008989

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #37819b;
/* rgb */ color: rgb(55, 129, 155);
/* oklch */ color: oklch(56.8% 0.083 224.3);

Tailwind

colors: {
  custom: {
    50: '#79a5b8',
    500: '#37819b',
    950: '#000000',
  },
}

SCSS

$custom: #37819b;
$custom-light: #79a5b8;
$custom-dark: #000000;

JSON

{
  "hex": "#37819b",
  "rgb": {
    "r": 55,
    "g": 129,
    "b": 155
  },
  "hsl": {
    "h": 195.6,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.56769,
    "c": 0.08277,
    "h": 224.3
  },
  "luminance": 0.18879
}

Semantic roles & 50–950 ramp

primary

#37819B

secondary

#BA8674

accent

#7451D7

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #37819B

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

Preview Lab → · Contrast checker → · Palette generator →