#3780C5#3780C5

#3780C5 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.7% C 0.128 H 249.9°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3780C5
RGB	rgb(55, 128, 197)
HSL	hsl(209, 56%, 49%)
HSV	hsv(209, 72%, 77%)
CMYK	cmyk(72.1%, 35%, 0%, 22.7%)
CIE-LAB	lab(52.15, 0.48, -42.46)
CIE-LCH	lch(52.15, 42.46, 270.64°)
OKLab	oklab(58.67% -0.0442 -0.1206)
OKLCH	oklch(58.67% 0.128 249.9)
XYZ	xyz(19.3690, 20.2796, 55.7061)
Luminance	0.2028 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780C5 #C57C37

analogous

#37C5C3 #3780C5 #3739C5

triadic

#3780C5 #C53780 #80C537

tetradic

#3780C5 #C337C5 #C57C37 #39C537

square

#3780C5 #C337C5 #C57C37 #39C537

split-complementary

#3780C5 #C53739 #C5C337

monochromatic

#1C4265 #2A6195 #3780C5 #659ED4 #95BCE1

Accessibility & contrast

On white

4.15

#3780C5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#3780C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780C5

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780C5	#FFFFFF	#000000	##000000
##3780C5	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6184C8

Deuteranopia (green-blind)

#4C76C4

Tritanopia (blue-blind)

#009099

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3780c5;
/* rgb */ color: rgb(55, 128, 197);
/* oklch */ color: oklch(58.7% 0.128 249.9);

Tailwind

colors: {
  custom: {
    50: '#7fa4d7',
    500: '#3780c5',
    950: '#000000',
  },
}

SCSS

$custom: #3780c5;
$custom-light: #7fa4d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3780c5",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 197
  },
  "hsl": {
    "h": 209.155,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5867,
    "c": 0.12847,
    "h": 249.9
  },
  "luminance": 0.20282
}

Semantic roles & 50–950 ramp

primary

#3780C5

secondary

#CDAB8B

accent

#9248E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B0F14

muted

#7C7F83

Preview Lab

Preview with #3780C5

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

Preview Lab → · Contrast checker → · Palette generator →