#3783B7#3783B7

#3783B7 is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.6% C 0.109 H 242.0°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3783B7
RGB	rgb(55, 131, 183)
HSL	hsl(204, 54%, 47%)
HSV	hsv(204, 70%, 72%)
CMYK	cmyk(69.9%, 28.4%, 0%, 28.2%)
CIE-LAB	lab(52.36, -6.25, -34.13)
CIE-LCH	lch(52.36, 34.70, 259.61°)
OKLab	oklab(58.61% -0.0513 -0.0963)
OKLCH	oklch(58.61% 0.109 242)
XYZ	xyz(18.2358, 20.4617, 47.7790)
Luminance	0.2046 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783B7 #B76B37

analogous

#37B7AB #3783B7 #3743B7

triadic

#3783B7 #B73783 #83B737

tetradic

#3783B7 #AB37B7 #B76B37 #43B737

square

#3783B7 #AB37B7 #B76B37 #43B737

split-complementary

#3783B7 #B73743 #B7AB37

monochromatic

#1B4059 #296188 #3783B7 #5DA0CE #8CBCDC

Accessibility & contrast

On white

4.12

#3783B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#3783B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783B7

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783B7	#FFFFFF	#000000	##000000
##3783B7	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B84B9

Deuteranopia (green-blind)

#5A77B6

Tritanopia (blue-blind)

#009095

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3783b7;
/* rgb */ color: rgb(55, 131, 183);
/* oklch */ color: oklch(58.6% 0.109 242.0);

Tailwind

colors: {
  custom: {
    50: '#7da6cd',
    500: '#3783b7',
    950: '#000000',
  },
}

SCSS

$custom: #3783b7;
$custom-light: #7da6cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3783b7",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 183
  },
  "hsl": {
    "h": 204.375,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.58606,
    "c": 0.10913,
    "h": 242
  },
  "luminance": 0.20464
}

Semantic roles & 50–950 ramp

primary

#3783B7

secondary

#C79F83

accent

#864BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3783B7

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

Preview Lab → · Contrast checker → · Palette generator →