#378DA4#378DA4

#378DA4 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.1% C 0.088 H 218.7°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#378DA4
RGB	rgb(55, 141, 164)
HSL	hsl(193, 50%, 43%)
HSV	hsv(193, 66%, 64%)
CMYK	cmyk(66.5%, 14%, 0%, 35.7%)
CIE-LAB	lab(54.60, -18.24, -19.74)
CIE-LCH	lch(54.60, 26.88, 227.27°)
OKLab	oklab(60.13% -0.0687 -0.055)
OKLCH	oklch(60.13% 0.088 218.7)
XYZ	xyz(17.7985, 22.5404, 38.5275)
Luminance	0.2254 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DA4 #A44E37

analogous

#37A485 #378DA4 #3756A4

triadic

#378DA4 #A4378D #8DA437

tetradic

#378DA4 #8537A4 #A44E37 #56A437

square

#378DA4 #8537A4 #A44E37 #56A437

split-complementary

#378DA4 #A43756 #A48537

monochromatic

#183E48 #286676 #378DA4 #53ADC5 #81C3D5

Accessibility & contrast

On white

3.81

#378DA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#378DA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DA4

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DA4	#FFFFFF	#000000	##000000
##378DA4	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E89A5

Deuteranopia (green-blind)

#6F7EA4

Tritanopia (blue-blind)

#009594

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378da4;
/* rgb */ color: rgb(55, 141, 164);
/* oklch */ color: oklch(60.1% 0.088 218.7);

Tailwind

colors: {
  custom: {
    50: '#7baebf',
    500: '#378da4',
    950: '#000000',
  },
}

SCSS

$custom: #378da4;
$custom-light: #7baebf;
$custom-dark: #000000;

JSON

{
  "hex": "#378da4",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 164
  },
  "hsl": {
    "h": 192.661,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60129,
    "c": 0.08797,
    "h": 218.7
  },
  "luminance": 0.22542
}

Semantic roles & 50–950 ramp

primary

#378DA4

secondary

#BE8779

accent

#6C4FD9

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378DA4

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

Preview Lab → · Contrast checker → · Palette generator →