#3783C4#3783C4

#3783C4 is a mid, vivid cyan. Relative luminance 0.210; OKLCH L 59.3% C 0.124 H 247.7°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3783C4
RGB	rgb(55, 131, 196)
HSL	hsl(208, 56%, 49%)
HSV	hsv(208, 72%, 77%)
CMYK	cmyk(71.9%, 33.2%, 0%, 23.1%)
CIE-LAB	lab(52.98, -1.67, -40.58)
CIE-LCH	lch(52.98, 40.61, 267.64°)
OKLab	oklab(59.31% -0.0473 -0.1151)
OKLCH	oklch(59.31% 0.124 247.7)
XYZ	xyz(19.6519, 21.0282, 55.2370)
Luminance	0.2103 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783C4 #C47837

analogous

#37C4BF #3783C4 #373CC4

triadic

#3783C4 #C43783 #83C437

tetradic

#3783C4 #BF37C4 #C47837 #3CC437

square

#3783C4 #BF37C4 #C47837 #3CC437

split-complementary

#3783C4 #C4373C #C4BF37

monochromatic

#1C4364 #2A6394 #3783C4 #65A0D4 #94BEE1

Accessibility & contrast

On white

4.03

#3783C4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#3783C4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783C4

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783C4	#FFFFFF	#000000	##000000
##3783C4	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6686C7

Deuteranopia (green-blind)

#5279C3

Tritanopia (blue-blind)

#00939A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3783c4;
/* rgb */ color: rgb(55, 131, 196);
/* oklch */ color: oklch(59.3% 0.124 247.7);

Tailwind

colors: {
  custom: {
    50: '#7fa6d6',
    500: '#3783c4',
    950: '#000000',
  },
}

SCSS

$custom: #3783c4;
$custom-light: #7fa6d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3783c4",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 196
  },
  "hsl": {
    "h": 207.66,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.59305,
    "c": 0.12446,
    "h": 247.7
  },
  "luminance": 0.2103
}

Semantic roles & 50–950 ramp

primary

#3783C4

secondary

#CCA98B

accent

#8E48DF

background

#F8FAFD

surface

#EFF4FA

border

#CACED3

text

#0B0F14

muted

#7C7F83

Preview Lab

Preview with #3783C4

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

Preview Lab → · Contrast checker → · Palette generator →