#3783B3#3783B3

#3783B3 is a mid, moderate cyan. Relative luminance 0.203; OKLCH L 58.4% C 0.105 H 239.8°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3783B3
RGB	rgb(55, 131, 179)
HSL	hsl(203, 53%, 46%)
HSV	hsv(203, 69%, 70%)
CMYK	cmyk(69.3%, 26.8%, 0%, 29.8%)
CIE-LAB	lab(52.17, -7.64, -32.12)
CIE-LCH	lch(52.17, 33.01, 256.61°)
OKLab	oklab(58.4% -0.0526 -0.0905)
OKLCH	oklch(58.4% 0.105 239.8)
XYZ	xyz(17.8254, 20.2976, 45.6175)
Luminance	0.2030 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783B3 #B36737

analogous

#37B3A5 #3783B3 #3745B3

triadic

#3783B3 #B33783 #83B337

tetradic

#3783B3 #A537B3 #B36737 #45B337

square

#3783B3 #A537B3 #B36737 #45B337

split-complementary

#3783B3 #B33745 #B3A537

monochromatic

#1A3E55 #296184 #3783B3 #5BA0CD #8ABBDB

Accessibility & contrast

On white

4.15

#3783B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#3783B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783B3

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783B3	#FFFFFF	#000000	##000000
##3783B3	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D83B5

Deuteranopia (green-blind)

#5C77B2

Tritanopia (blue-blind)

#008F94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3783b3;
/* rgb */ color: rgb(55, 131, 179);
/* oklch */ color: oklch(58.4% 0.105 239.8);

Tailwind

colors: {
  custom: {
    50: '#7ca6ca',
    500: '#3783b3',
    950: '#000000',
  },
}

SCSS

$custom: #3783b3;
$custom-light: #7ca6ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3783b3",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 179
  },
  "hsl": {
    "h": 203.226,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.58401,
    "c": 0.10467,
    "h": 239.8
  },
  "luminance": 0.20299
}

Semantic roles & 50–950 ramp

primary

#3783B3

secondary

#C59B81

accent

#844BDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3783B3

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

Preview Lab → · Contrast checker → · Palette generator →