#3778D0#3778D0

#3778D0 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.5% C 0.151 H 256.9°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3778D0
RGB	rgb(55, 120, 208)
HSL	hsl(215, 62%, 52%)
HSV	hsv(215, 74%, 82%)
CMYK	cmyk(73.6%, 42.3%, 0%, 18.4%)
CIE-LAB	lab(50.45, 9.35, -51.43)
CIE-LCH	lch(50.45, 52.27, 280.30°)
OKLab	oklab(57.54% -0.0342 -0.1471)
OKLCH	oklch(57.54% 0.151 256.9)
XYZ	xyz(19.6730, 18.7970, 62.2536)
Luminance	0.1880 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778D0 #D08F37

analogous

#37C4D0 #3778D0 #4337D0

triadic

#3778D0 #D03778 #78D037

tetradic

#3778D0 #D037C4 #D08F37 #37D043

square

#3778D0 #D037C4 #D08F37 #37D043

split-complementary

#3778D0 #D04337 #C4D037

monochromatic

#1B4072 #265CA3 #3778D0 #6999DC #9ABBE7

Accessibility & contrast

On white

4.41

#3778D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#3778D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778D0

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778D0	#FFFFFF	#000000	##000000
##3778D0	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D80D3

Deuteranopia (green-blind)

#3272CE

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3778d0;
/* rgb */ color: rgb(55, 120, 208);
/* oklch */ color: oklch(57.5% 0.151 256.9);

Tailwind

colors: {
  custom: {
    50: '#819edf',
    500: '#3778d0',
    950: '#000000',
  },
}

SCSS

$custom: #3778d0;
$custom-light: #819edf;
$custom-dark: #000000;

JSON

{
  "hex": "#3778d0",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 208
  },
  "hsl": {
    "h": 214.51,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57537,
    "c": 0.151,
    "h": 256.9
  },
  "luminance": 0.18799
}

Semantic roles & 50–950 ramp

primary

#3778D0

secondary

#D3B690

accent

#A043E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3778D0

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

Preview Lab → · Contrast checker → · Palette generator →