#3778CF#3778CF

#3778CF is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.5% C 0.150 H 256.7°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3778CF
RGB	rgb(55, 120, 207)
HSL	hsl(214, 61%, 51%)
HSV	hsv(214, 73%, 81%)
CMYK	cmyk(73.4%, 42%, 0%, 18.8%)
CIE-LAB	lab(50.39, 8.98, -50.95)
CIE-LCH	lch(50.39, 51.74, 280.00°)
OKLab	oklab(57.47% -0.0344 -0.1457)
OKLCH	oklch(57.47% 0.15 256.7)
XYZ	xyz(19.5504, 18.7480, 61.6077)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778CF #CF8E37

analogous

#37C4CF #3778CF #4237CF

triadic

#3778CF #CF3778 #78CF37

tetradic

#3778CF #CF37C4 #CF8E37 #37CF42

square

#3778CF #CF37C4 #CF8E37 #37CF42

split-complementary

#3778CF #CF4237 #C4CF37

monochromatic

#1B4071 #275BA2 #3778CF #6899DB #9ABBE7

Accessibility & contrast

On white

4.42

#3778CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3778CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778CF

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778CF	#FFFFFF	#000000	##000000
##3778CF	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E7FD2

Deuteranopia (green-blind)

#3371CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3778cf;
/* rgb */ color: rgb(55, 120, 207);
/* oklch */ color: oklch(57.5% 0.150 256.7);

Tailwind

colors: {
  custom: {
    50: '#819ede',
    500: '#3778cf',
    950: '#000000',
  },
}

SCSS

$custom: #3778cf;
$custom-light: #819ede;
$custom-dark: #000000;

JSON

{
  "hex": "#3778cf",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 214.342,
    "s": 61.29,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57473,
    "c": 0.14968,
    "h": 256.7
  },
  "luminance": 0.1875
}

Semantic roles & 50–950 ramp

primary

#3778CF

secondary

#D2B68F

accent

#A043E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3778CF

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

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