#378FA6#378FA6

#378FA6 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.7% C 0.089 H 218.3°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#378FA6
RGB	rgb(55, 143, 166)
HSL	hsl(192, 50%, 43%)
HSV	hsv(192, 67%, 65%)
CMYK	cmyk(66.9%, 13.9%, 0%, 34.9%)
CIE-LAB	lab(55.29, -18.67, -19.84)
CIE-LCH	lch(55.29, 27.24, 226.74°)
OKLab	oklab(60.71% -0.07 -0.0552)
OKLCH	oklch(60.71% 0.089 218.3)
XYZ	xyz(18.2781, 23.2083, 39.5854)
Luminance	0.2321 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FA6 #A64E37

analogous

#37A685 #378FA6 #3758A6

triadic

#378FA6 #A6378F #8FA637

tetradic

#378FA6 #8537A6 #A64E37 #58A637

square

#378FA6 #8537A6 #A64E37 #58A637

split-complementary

#378FA6 #A63758 #A68537

monochromatic

#19404A #286778 #378FA6 #54AFC6 #82C4D6

Accessibility & contrast

On white

3.72

#378FA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#378FA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FA6

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FA6	#FFFFFF	#000000	##000000
##378FA6	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808BA7

Deuteranopia (green-blind)

#707FA6

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378fa6;
/* rgb */ color: rgb(55, 143, 166);
/* oklch */ color: oklch(60.7% 0.089 218.3);

Tailwind

colors: {
  custom: {
    50: '#7bb0c0',
    500: '#378fa6',
    950: '#000000',
  },
}

SCSS

$custom: #378fa6;
$custom-light: #7bb0c0;
$custom-dark: #000000;

JSON

{
  "hex": "#378fa6",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 166
  },
  "hsl": {
    "h": 192.432,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.60708,
    "c": 0.08917,
    "h": 218.3
  },
  "luminance": 0.2321
}

Semantic roles & 50–950 ramp

primary

#378FA6

secondary

#BF887A

accent

#6B4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378FA6

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

Preview Lab → · Contrast checker → · Palette generator →