#3783B9#3783B9

#3783B9 is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.7% C 0.111 H 243.0°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#3783B9
RGB	rgb(55, 131, 185)
HSL	hsl(205, 54%, 47%)
HSV	hsv(205, 70%, 73%)
CMYK	cmyk(70.3%, 29.2%, 0%, 27.5%)
CIE-LAB	lab(52.45, -5.56, -35.13)
CIE-LCH	lch(52.45, 35.56, 261.01°)
OKLab	oklab(58.71% -0.0506 -0.0992)
OKLCH	oklch(58.71% 0.111 243)
XYZ	xyz(18.4454, 20.5456, 48.8831)
Luminance	0.2055 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783B9 #B96D37

analogous

#37B9AE #3783B9 #3742B9

triadic

#3783B9 #B93783 #83B937

tetradic

#3783B9 #AE37B9 #B96D37 #42B937

square

#3783B9 #AE37B9 #B96D37 #42B937

split-complementary

#3783B9 #B93742 #B9AE37

monochromatic

#1B405B #29628A #3783B9 #5EA0CF #8DBCDD

Accessibility & contrast

On white

4.11

#3783B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#3783B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783B9

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783B9	#FFFFFF	#000000	##000000
##3783B9	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A84BB

Deuteranopia (green-blind)

#5978B8

Tritanopia (blue-blind)

#009096

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3783b9;
/* rgb */ color: rgb(55, 131, 185);
/* oklch */ color: oklch(58.7% 0.111 243.0);

Tailwind

colors: {
  custom: {
    50: '#7da6ce',
    500: '#3783b9',
    950: '#000000',
  },
}

SCSS

$custom: #3783b9;
$custom-light: #7da6ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3783b9",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 185
  },
  "hsl": {
    "h": 204.923,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.58711,
    "c": 0.11141,
    "h": 243
  },
  "luminance": 0.20548
}

Semantic roles & 50–950 ramp

primary

#3783B9

secondary

#C8A084

accent

#874ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3783B9

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

Preview Lab → · Contrast checker → · Palette generator →