#3780C1#3780C1

#3780C1 is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.4% C 0.123 H 248.5°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3780C1
RGB	rgb(55, 128, 193)
HSL	hsl(208, 56%, 49%)
HSV	hsv(208, 72%, 76%)
CMYK	cmyk(71.5%, 33.7%, 0%, 24.3%)
CIE-LAB	lab(51.95, -0.96, -40.49)
CIE-LCH	lch(51.95, 40.51, 268.65°)
OKLab	oklab(58.44% -0.0453 -0.1149)
OKLCH	oklch(58.44% 0.124 248.5)
XYZ	xyz(18.9167, 20.0987, 53.3242)
Luminance	0.2010 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780C1 #C17837

analogous

#37C1BD #3780C1 #373BC1

triadic

#3780C1 #C13780 #80C137

tetradic

#3780C1 #BD37C1 #C17837 #3BC137

square

#3780C1 #BD37C1 #C17837 #3BC137

split-complementary

#3780C1 #C1373B #C1BD37

monochromatic

#1C4162 #296091 #3780C1 #639ED2 #92BBE0

Accessibility & contrast

On white

4.18

#3780C1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#3780C1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780C1

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780C1	#FFFFFF	#000000	##000000
##3780C1	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6383C4

Deuteranopia (green-blind)

#4F76C0

Tritanopia (blue-blind)

#008F97

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3780c1;
/* rgb */ color: rgb(55, 128, 193);
/* oklch */ color: oklch(58.4% 0.123 248.5);

Tailwind

colors: {
  custom: {
    50: '#7fa4d4',
    500: '#3780c1',
    950: '#000000',
  },
}

SCSS

$custom: #3780c1;
$custom-light: #7fa4d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3780c1",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 193
  },
  "hsl": {
    "h": 208.261,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.58444,
    "c": 0.1235,
    "h": 248.5
  },
  "luminance": 0.20101
}

Semantic roles & 50–950 ramp

primary

#3780C1

secondary

#CBA889

accent

#9049DF

background

#F8FAFD

surface

#EFF4FA

border

#CACED3

text

#0B0F14

muted

#7C7F83

Preview Lab

Preview with #3780C1

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

Preview Lab → · Contrast checker → · Palette generator →