#378EA4#378EA4

#378EA4 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.4% C 0.088 H 217.6°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#378EA4
RGB	rgb(55, 142, 164)
HSL	hsl(192, 50%, 43%)
HSV	hsv(192, 66%, 64%)
CMYK	cmyk(66.5%, 13.4%, 0%, 35.7%)
CIE-LAB	lab(54.90, -18.77, -19.27)
CIE-LCH	lch(54.90, 26.90, 225.75°)
OKLab	oklab(60.38% -0.0697 -0.0536)
OKLCH	oklch(60.38% 0.088 217.6)
XYZ	xyz(17.9466, 22.8366, 38.5769)
Luminance	0.2284 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EA4 #A44D37

analogous

#37A483 #378EA4 #3757A4

triadic

#378EA4 #A4378E #8EA437

tetradic

#378EA4 #8337A4 #A44D37 #57A437

square

#378EA4 #8337A4 #A44D37 #57A437

split-complementary

#378EA4 #A43757 #A48337

monochromatic

#183F48 #286676 #378EA4 #53AEC5 #81C4D5

Accessibility & contrast

On white

3.77

#378EA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#378EA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EA4

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EA4	#FFFFFF	#000000	##000000
##378EA4	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)

#808AA5

Deuteranopia (green-blind)

#707EA4

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378ea4;
/* rgb */ color: rgb(55, 142, 164);
/* oklch */ color: oklch(60.4% 0.088 217.6);

Tailwind

colors: {
  custom: {
    50: '#7bafbf',
    500: '#378ea4',
    950: '#000000',
  },
}

SCSS

$custom: #378ea4;
$custom-light: #7bafbf;
$custom-dark: #000000;

JSON

{
  "hex": "#378ea4",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 164
  },
  "hsl": {
    "h": 192.11,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60376,
    "c": 0.08798,
    "h": 217.6
  },
  "luminance": 0.22839
}

Semantic roles & 50–950 ramp

primary

#378EA4

secondary

#BE8779

accent

#6B4FD9

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378EA4

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

Preview Lab → · Contrast checker → · Palette generator →