#3778C4#3778C4

#3778C4 is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.8% C 0.135 H 254.2°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3778C4
RGB	rgb(55, 120, 196)
HSL	hsl(212, 56%, 49%)
HSV	hsv(212, 72%, 77%)
CMYK	cmyk(71.9%, 38.8%, 0%, 23.1%)
CIE-LAB	lab(49.77, 4.96, -45.66)
CIE-LCH	lch(49.77, 45.93, 276.21°)
OKLab	oklab(56.79% -0.0369 -0.1301)
OKLCH	oklch(56.79% 0.135 254.2)
XYZ	xyz(18.2521, 18.2287, 54.7704)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778C4 #C48337

analogous

#37BFC4 #3778C4 #3C37C4

triadic

#3778C4 #C43778 #78C437

tetradic

#3778C4 #C437BF #C48337 #37C43C

square

#3778C4 #C437BF #C48337 #37C43C

split-complementary

#3778C4 #C43C37 #BFC437

monochromatic

#1C3D64 #2A5B94 #3778C4 #6598D4 #94B8E1

Accessibility & contrast

On white

4.52

#3778C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3778C4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778C4

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778C4	#FFFFFF	#000000	##000000
##3778C4	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#557DC7

Deuteranopia (green-blind)

#3F70C2

Tritanopia (blue-blind)

#008A94

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3778c4;
/* rgb */ color: rgb(55, 120, 196);
/* oklch */ color: oklch(56.8% 0.135 254.2);

Tailwind

colors: {
  custom: {
    50: '#7f9ed6',
    500: '#3778c4',
    950: '#000000',
  },
}

SCSS

$custom: #3778c4;
$custom-light: #7f9ed6;
$custom-dark: #000000;

JSON

{
  "hex": "#3778c4",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 196
  },
  "hsl": {
    "h": 212.34,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.56791,
    "c": 0.13525,
    "h": 254.2
  },
  "luminance": 0.18231
}

Semantic roles & 50–950 ramp

primary

#3778C4

secondary

#CCAE8B

accent

#9A48DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3778C4

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

Preview Lab → · Contrast checker → · Palette generator →