#3F83D3#3F83D3

#3F83D3 is a mid, vivid cyan. Relative luminance 0.220; OKLCH L 60.4% C 0.140 H 254.2°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F83D3
RGB	rgb(63, 131, 211)
HSL	hsl(212, 63%, 54%)
HSV	hsv(212, 70%, 83%)
CMYK	cmyk(70.1%, 37.9%, 0%, 17.3%)
CIE-LAB	lab(54.02, 4.83, -47.43)
CIE-LCH	lch(54.02, 47.67, 275.81°)
OKLab	oklab(60.44% -0.0382 -0.135)
OKLCH	oklch(60.44% 0.14 254.2)
XYZ	xyz(21.9197, 21.9902, 64.7047)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83D3 #D38F3F

analogous

#3FCDD3 #3F83D3 #453FD3

triadic

#3F83D3 #D33F83 #83D33F

tetradic

#3F83D3 #D33FCD #D38F3F #3FD345

square

#3F83D3 #D33FCD #D38F3F #3FD345

split-complementary

#3F83D3 #D3453F #CDD33F

monochromatic

#1C487B #2865AD #3F83D3 #71A3DE #A3C3EA

Accessibility & contrast

On white

3.89

#3F83D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#3F83D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83D3

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83D3	#FFFFFF	#000000	##000000
##3F83D3	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E89D6

Deuteranopia (green-blind)

#487BD1

Tritanopia (blue-blind)

#0096A1

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3f83d3;
/* rgb */ color: rgb(63, 131, 211);
/* oklch */ color: oklch(60.4% 0.140 254.2);

Tailwind

colors: {
  custom: {
    50: '#85a6e1',
    500: '#3f83d3',
    950: '#000000',
  },
}

SCSS

$custom: #3f83d3;
$custom-light: #85a6e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83d3",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 211
  },
  "hsl": {
    "h": 212.432,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.60443,
    "c": 0.14036,
    "h": 254.2
  },
  "luminance": 0.21993
}

Semantic roles & 50–950 ramp

primary

#3F83D3

secondary

#D7B997

accent

#9B42E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F83D3

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

Preview Lab → · Contrast checker → · Palette generator →