#3783BC#3783BC

#3783BC is a mid, moderate cyan. Relative luminance 0.207; OKLCH L 58.9% C 0.115 H 244.4°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#3783BC
RGB	rgb(55, 131, 188)
HSL	hsl(206, 55%, 48%)
HSV	hsv(206, 71%, 74%)
CMYK	cmyk(70.7%, 30.3%, 0%, 26.3%)
CIE-LAB	lab(52.59, -4.50, -36.62)
CIE-LCH	lch(52.59, 36.90, 262.99°)
OKLab	oklab(58.87% -0.0497 -0.1036)
OKLCH	oklch(58.87% 0.115 244.4)
XYZ	xyz(18.7655, 20.6736, 50.5686)
Luminance	0.2068 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783BC #BC7037

analogous

#37BCB2 #3783BC #3741BC

triadic

#3783BC #BC3783 #83BC37

tetradic

#3783BC #B237BC #BC7037 #41BC37

square

#3783BC #B237BC #BC7037 #41BC37

split-complementary

#3783BC #BC3741 #BCB237

monochromatic

#1B415D #29628D #3783BC #60A0D0 #8FBCDE

Accessibility & contrast

On white

4.09

#3783BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#3783BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783BC

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783BC	#FFFFFF	#000000	##000000
##3783BC	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6985BF

Deuteranopia (green-blind)

#5778BB

Tritanopia (blue-blind)

#009197

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3783bc;
/* rgb */ color: rgb(55, 131, 188);
/* oklch */ color: oklch(58.9% 0.115 244.4);

Tailwind

colors: {
  custom: {
    50: '#7ea6d0',
    500: '#3783bc',
    950: '#000000',
  },
}

SCSS

$custom: #3783bc;
$custom-light: #7ea6d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3783bc",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 188
  },
  "hsl": {
    "h": 205.714,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.58869,
    "c": 0.11489,
    "h": 244.4
  },
  "luminance": 0.20676
}

Semantic roles & 50–950 ramp

primary

#3783BC

secondary

#C9A386

accent

#894ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3783BC

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

Preview Lab → · Contrast checker → · Palette generator →