#378DC4#378DC4

#378DC4 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.6% C 0.116 H 240.7°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#378DC4
RGB	rgb(55, 141, 196)
HSL	hsl(203, 56%, 49%)
HSV	hsv(203, 72%, 77%)
CMYK	cmyk(71.9%, 28.1%, 0%, 23.1%)
CIE-LAB	lab(55.93, -7.49, -35.94)
CIE-LCH	lch(55.93, 36.71, 258.22°)
OKLab	oklab(61.64% -0.057 -0.1015)
OKLCH	oklch(61.64% 0.116 240.7)
XYZ	xyz(21.0604, 23.8451, 55.7065)
Luminance	0.2385 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DC4 #C46E37

analogous

#37C4B5 #378DC4 #3747C4

triadic

#378DC4 #C4378D #8DC437

tetradic

#378DC4 #B537C4 #C46E37 #47C437

square

#378DC4 #B537C4 #C46E37 #47C437

split-complementary

#378DC4 #C43747 #C4B537

monochromatic

#1C4864 #2A6B94 #378DC4 #65A8D4 #94C3E1

Accessibility & contrast

On white

3.64

#378DC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#378DC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DC4

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DC4	#FFFFFF	#000000	##000000
##378DC4	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748EC6

Deuteranopia (green-blind)

#6080C3

Tritanopia (blue-blind)

#009BA0

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378dc4;
/* rgb */ color: rgb(55, 141, 196);
/* oklch */ color: oklch(61.6% 0.116 240.7);

Tailwind

colors: {
  custom: {
    50: '#7faed6',
    500: '#378dc4',
    950: '#000000',
  },
}

SCSS

$custom: #378dc4;
$custom-light: #7faed6;
$custom-dark: #000000;

JSON

{
  "hex": "#378dc4",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 196
  },
  "hsl": {
    "h": 203.404,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.61636,
    "c": 0.11642,
    "h": 240.7
  },
  "luminance": 0.23848
}

Semantic roles & 50–950 ramp

primary

#378DC4

secondary

#CCA48B

accent

#8348DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378DC4

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

Preview Lab → · Contrast checker → · Palette generator →