#378CA6#378CA6

#378CA6 is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.0% C 0.089 H 221.6°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#378CA6
RGB	rgb(55, 140, 166)
HSL	hsl(194, 50%, 43%)
HSV	hsv(194, 67%, 65%)
CMYK	cmyk(66.9%, 15.7%, 0%, 34.9%)
CIE-LAB	lab(54.36, -17.05, -21.25)
CIE-LCH	lch(54.36, 27.24, 231.25°)
OKLab	oklab(59.97% -0.0668 -0.0593)
OKLCH	oklch(59.97% 0.089 221.6)
XYZ	xyz(17.8338, 22.3196, 39.4372)
Luminance	0.2232 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CA6 #A65137

analogous

#37A688 #378CA6 #3754A6

triadic

#378CA6 #A6378C #8CA637

tetradic

#378CA6 #8837A6 #A65137 #54A637

square

#378CA6 #8837A6 #A65137 #54A637

split-complementary

#378CA6 #A63754 #A68837

monochromatic

#193E4A #286578 #378CA6 #54ACC6 #82C2D6

Accessibility & contrast

On white

3.84

#378CA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#378CA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CA6

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CA6	#FFFFFF	#000000	##000000
##378CA6	1.00	3.84	5.46	5.46
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D89A7

Deuteranopia (green-blind)

#6D7DA6

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ca6;
/* rgb */ color: rgb(55, 140, 166);
/* oklch */ color: oklch(60.0% 0.089 221.6);

Tailwind

colors: {
  custom: {
    50: '#7badc0',
    500: '#378ca6',
    950: '#000000',
  },
}

SCSS

$custom: #378ca6;
$custom-light: #7badc0;
$custom-dark: #000000;

JSON

{
  "hex": "#378ca6",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 166
  },
  "hsl": {
    "h": 194.054,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.59969,
    "c": 0.08929,
    "h": 221.6
  },
  "luminance": 0.22322
}

Semantic roles & 50–950 ramp

primary

#378CA6

secondary

#BF8A7A

accent

#6F4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378CA6

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

Preview Lab → · Contrast checker → · Palette generator →