#378EA5#378EA5

#378EA5 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.4% C 0.089 H 218.5°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#378EA5
RGB	rgb(55, 142, 165)
HSL	hsl(193, 50%, 43%)
HSV	hsv(193, 67%, 65%)
CMYK	cmyk(66.7%, 13.9%, 0%, 35.3%)
CIE-LAB	lab(54.94, -18.45, -19.79)
CIE-LCH	lch(54.94, 27.06, 227.00°)
OKLab	oklab(60.42% -0.0693 -0.0551)
OKLCH	oklch(60.42% 0.089 218.5)
XYZ	xyz(18.0373, 22.8729, 39.0543)
Luminance	0.2288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EA5 #A54E37

analogous

#37A585 #378EA5 #3757A5

triadic

#378EA5 #A5378E #8EA537

tetradic

#378EA5 #8537A5 #A54E37 #57A537

square

#378EA5 #8537A5 #A54E37 #57A537

split-complementary

#378EA5 #A53757 #A58537

monochromatic

#183F49 #286677 #378EA5 #53AEC6 #81C4D5

Accessibility & contrast

On white

3.77

#378EA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#378EA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EA5

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EA5	#FFFFFF	#000000	##000000
##378EA5	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8AA6

Deuteranopia (green-blind)

#707FA5

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378ea5;
/* rgb */ color: rgb(55, 142, 165);
/* oklch */ color: oklch(60.4% 0.089 218.5);

Tailwind

colors: {
  custom: {
    50: '#7bafbf',
    500: '#378ea5',
    950: '#000000',
  },
}

SCSS

$custom: #378ea5;
$custom-light: #7bafbf;
$custom-dark: #000000;

JSON

{
  "hex": "#378ea5",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 165
  },
  "hsl": {
    "h": 192.545,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.60418,
    "c": 0.08857,
    "h": 218.5
  },
  "luminance": 0.22875
}

Semantic roles & 50–950 ramp

primary

#378EA5

secondary

#BF8879

accent

#6B4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378EA5

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

Preview Lab → · Contrast checker → · Palette generator →