#378EC4#378EC4

#378EC4 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.9% C 0.116 H 239.9°. Best body text is #000000 at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#378EC4
RGB	rgb(55, 142, 196)
HSL	hsl(203, 56%, 49%)
HSV	hsv(203, 72%, 77%)
CMYK	cmyk(71.9%, 27.6%, 0%, 23.1%)
CIE-LAB	lab(56.23, -8.06, -35.47)
CIE-LCH	lch(56.23, 36.38, 257.19°)
OKLab	oklab(61.87% -0.058 -0.1001)
OKLCH	oklch(61.87% 0.116 239.9)
XYZ	xyz(21.2085, 24.1414, 55.7559)
Luminance	0.2414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EC4 #C46D37

analogous

#37C4B4 #378EC4 #3748C4

triadic

#378EC4 #C4378E #8EC437

tetradic

#378EC4 #B437C4 #C46D37 #48C437

square

#378EC4 #B437C4 #C46D37 #48C437

split-complementary

#378EC4 #C43748 #C4B437

monochromatic

#1C4964 #2A6B94 #378EC4 #65A9D4 #94C4E1

Accessibility & contrast

On white

3.60

#378EC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.83

#378EC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EC4

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EC4	#FFFFFF	#000000	##000000
##378EC4	1.00	3.60	5.83	5.83
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.83	21.00	1.00	1.00
##000000	5.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758EC6

Deuteranopia (green-blind)

#6281C3

Tritanopia (blue-blind)

#009CA1

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #378ec4;
/* rgb */ color: rgb(55, 142, 196);
/* oklch */ color: oklch(61.9% 0.116 239.9);

Tailwind

colors: {
  custom: {
    50: '#7faed6',
    500: '#378ec4',
    950: '#000000',
  },
}

SCSS

$custom: #378ec4;
$custom-light: #7faed6;
$custom-dark: #000000;

JSON

{
  "hex": "#378ec4",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 196
  },
  "hsl": {
    "h": 202.979,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.61871,
    "c": 0.11573,
    "h": 239.9
  },
  "luminance": 0.24144
}

Semantic roles & 50–950 ramp

primary

#378EC4

secondary

#CCA48B

accent

#8248DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378EC4

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

Preview Lab → · Contrast checker → · Palette generator →