#378AA3#378AA3

#378AA3 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.3% C 0.087 H 221.2°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#378AA3
RGB	rgb(55, 138, 163)
HSL	hsl(194, 50%, 43%)
HSV	hsv(194, 66%, 64%)
CMYK	cmyk(66.3%, 15.3%, 0%, 36.1%)
CIE-LAB	lab(53.63, -16.94, -20.64)
CIE-LCH	lch(53.63, 26.70, 230.63°)
OKLab	oklab(59.35% -0.0658 -0.0575)
OKLCH	oklch(59.35% 0.087 221.2)
XYZ	xyz(17.2722, 21.6317, 37.9083)
Luminance	0.2163 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AA3 #A35037

analogous

#37A386 #378AA3 #3754A3

triadic

#378AA3 #A3378A #8AA337

tetradic

#378AA3 #8637A3 #A35037 #54A337

square

#378AA3 #8637A3 #A35037 #54A337

split-complementary

#378AA3 #A33754 #A38637

monochromatic

#183D47 #286375 #378AA3 #52AAC5 #80C1D4

Accessibility & contrast

On white

3.94

#378AA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#378AA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AA3

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AA3	#FFFFFF	#000000	##000000
##378AA3	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B87A4

Deuteranopia (green-blind)

#6C7BA3

Tritanopia (blue-blind)

#009292

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #378aa3;
/* rgb */ color: rgb(55, 138, 163);
/* oklch */ color: oklch(59.3% 0.087 221.2);

Tailwind

colors: {
  custom: {
    50: '#7aacbe',
    500: '#378aa3',
    950: '#000000',
  },
}

SCSS

$custom: #378aa3;
$custom-light: #7aacbe;
$custom-dark: #000000;

JSON

{
  "hex": "#378aa3",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 163
  },
  "hsl": {
    "h": 193.889,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.59345,
    "c": 0.08743,
    "h": 221.2
  },
  "luminance": 0.21634
}

Semantic roles & 50–950 ramp

primary

#378AA3

secondary

#BE8878

accent

#6F4FD9

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378AA3

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

Preview Lab → · Contrast checker → · Palette generator →