#378EA6#378EA6

#378EA6 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.5% C 0.089 H 219.4°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#378EA6
RGB	rgb(55, 142, 166)
HSL	hsl(193, 50%, 43%)
HSV	hsv(193, 67%, 65%)
CMYK	cmyk(66.9%, 14.5%, 0%, 34.9%)
CIE-LAB	lab(54.98, -18.13, -20.31)
CIE-LCH	lch(54.98, 27.22, 228.24°)
OKLab	oklab(60.46% -0.0689 -0.0566)
OKLCH	oklch(60.46% 0.089 219.4)
XYZ	xyz(18.1287, 22.9094, 39.5355)
Luminance	0.2291 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EA6 #A64F37

analogous

#37A686 #378EA6 #3756A6

triadic

#378EA6 #A6378E #8EA637

tetradic

#378EA6 #8637A6 #A64F37 #56A637

square

#378EA6 #8637A6 #A64F37 #56A637

split-complementary

#378EA6 #A63756 #A68637

monochromatic

#193F4A #286778 #378EA6 #54AEC6 #82C3D6

Accessibility & contrast

On white

3.76

#378EA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#378EA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EA6

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EA6	#FFFFFF	#000000	##000000
##378EA6	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8AA7

Deuteranopia (green-blind)

#6F7FA6

Tritanopia (blue-blind)

#009696

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378ea6;
/* rgb */ color: rgb(55, 142, 166);
/* oklch */ color: oklch(60.5% 0.089 219.4);

Tailwind

colors: {
  custom: {
    50: '#7bafc0',
    500: '#378ea6',
    950: '#000000',
  },
}

SCSS

$custom: #378ea6;
$custom-light: #7bafc0;
$custom-dark: #000000;

JSON

{
  "hex": "#378ea6",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 166
  },
  "hsl": {
    "h": 192.973,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.60461,
    "c": 0.08917,
    "h": 219.4
  },
  "luminance": 0.22911
}

Semantic roles & 50–950 ramp

primary

#378EA6

secondary

#BF897A

accent

#6C4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378EA6

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

Preview Lab → · Contrast checker → · Palette generator →