#3783B4#3783B4

#3783B4 is a mid, moderate cyan. Relative luminance 0.203; OKLCH L 58.5% C 0.106 H 240.4°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#3783B4
RGB	rgb(55, 131, 180)
HSL	hsl(204, 53%, 46%)
HSV	hsv(204, 69%, 71%)
CMYK	cmyk(69.4%, 27.2%, 0%, 29.4%)
CIE-LAB	lab(52.22, -7.30, -32.62)
CIE-LCH	lch(52.22, 33.43, 257.39°)
OKLab	oklab(58.45% -0.0522 -0.092)
OKLCH	oklch(58.45% 0.106 240.4)
XYZ	xyz(17.9269, 20.3382, 46.1520)
Luminance	0.2034 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783B4 #B46837

analogous

#37B4A6 #3783B4 #3744B4

triadic

#3783B4 #B43783 #83B437

tetradic

#3783B4 #A637B4 #B46837 #44B437

square

#3783B4 #A637B4 #B46837 #44B437

split-complementary

#3783B4 #B43744 #B4A637

monochromatic

#1A3F56 #296185 #3783B4 #5BA0CD #8ABBDB

Accessibility & contrast

On white

4.14

#3783B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#3783B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783B4

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783B4	#FFFFFF	#000000	##000000
##3783B4	1.00	4.14	5.07	5.07
#FFFFFF	4.14	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)

#6C83B6

Deuteranopia (green-blind)

#5B77B3

Tritanopia (blue-blind)

#008F94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3783b4;
/* rgb */ color: rgb(55, 131, 180);
/* oklch */ color: oklch(58.5% 0.106 240.4);

Tailwind

colors: {
  custom: {
    50: '#7ca6ca',
    500: '#3783b4',
    950: '#000000',
  },
}

SCSS

$custom: #3783b4;
$custom-light: #7ca6ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3783b4",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 180
  },
  "hsl": {
    "h": 203.52,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.58452,
    "c": 0.10577,
    "h": 240.4
  },
  "luminance": 0.2034
}

Semantic roles & 50–950 ramp

primary

#3783B4

secondary

#C69C81

accent

#844BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3783B4

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

Preview Lab → · Contrast checker → · Palette generator →