#3780C6#3780C6

#3780C6 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.7% C 0.130 H 250.2°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#3780C6
RGB	rgb(55, 128, 198)
HSL	hsl(209, 57%, 50%)
HSV	hsv(209, 72%, 78%)
CMYK	cmyk(72.2%, 35.4%, 0%, 22.4%)
CIE-LAB	lab(52.20, 0.83, -42.95)
CIE-LCH	lch(52.20, 42.95, 271.11°)
OKLab	oklab(58.73% -0.0439 -0.1221)
OKLCH	oklch(58.73% 0.13 250.2)
XYZ	xyz(19.4839, 20.3256, 56.3115)
Luminance	0.2033 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780C6 #C67D37

analogous

#37C6C5 #3780C6 #3738C6

triadic

#3780C6 #C63780 #80C637

tetradic

#3780C6 #C537C6 #C67D37 #38C637

square

#3780C6 #C537C6 #C67D37 #38C637

split-complementary

#3780C6 #C63738 #C6C537

monochromatic

#1C4266 #2A6196 #3780C6 #669ED4 #96BCE2

Accessibility & contrast

On white

4.15

#3780C6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#3780C6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780C6

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780C6	#FFFFFF	#000000	##000000
##3780C6	1.00	4.15	5.07	5.07
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6084C9

Deuteranopia (green-blind)

#4B76C5

Tritanopia (blue-blind)

#00919A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3780c6;
/* rgb */ color: rgb(55, 128, 198);
/* oklch */ color: oklch(58.7% 0.130 250.2);

Tailwind

colors: {
  custom: {
    50: '#7fa4d7',
    500: '#3780c6',
    950: '#000000',
  },
}

SCSS

$custom: #3780c6;
$custom-light: #7fa4d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3780c6",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 198
  },
  "hsl": {
    "h": 209.371,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.58727,
    "c": 0.12972,
    "h": 250.2
  },
  "luminance": 0.20328
}

Semantic roles & 50–950 ramp

primary

#3780C6

secondary

#CDAC8C

accent

#9248E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B0F14

muted

#7C7F83

Preview Lab

Preview with #3780C6

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

Preview Lab → · Contrast checker → · Palette generator →