#3F83D1#3F83D1

#3F83D1 is a mid, vivid cyan. Relative luminance 0.219; OKLCH L 60.3% C 0.138 H 253.7°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F83D1
RGB	rgb(63, 131, 209)
HSL	hsl(212, 61%, 53%)
HSV	hsv(212, 70%, 82%)
CMYK	cmyk(69.9%, 37.3%, 0%, 18%)
CIE-LAB	lab(53.91, 4.12, -46.47)
CIE-LCH	lch(53.91, 46.65, 275.06°)
OKLab	oklab(60.33% -0.0387 -0.1322)
OKLCH	oklch(60.33% 0.138 253.7)
XYZ	xyz(21.6706, 21.8905, 63.3924)
Luminance	0.2189 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83D1 #D18D3F

analogous

#3FCCD1 #3F83D1 #443FD1

triadic

#3F83D1 #D13F83 #83D13F

tetradic

#3F83D1 #D13FCC #D18D3F #3FD144

square

#3F83D1 #D13FCC #D18D3F #3FD144

split-complementary

#3F83D1 #D1443F #CCD13F

monochromatic

#1D4879 #2965AA #3F83D1 #70A3DD #A2C3E9

Accessibility & contrast

On white

3.90

#3F83D1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#3F83D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83D1

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83D1	#FFFFFF	#000000	##000000
##3F83D1	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6088D4

Deuteranopia (green-blind)

#4A7BCF

Tritanopia (blue-blind)

#0095A0

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3f83d1;
/* rgb */ color: rgb(63, 131, 209);
/* oklch */ color: oklch(60.3% 0.138 253.7);

Tailwind

colors: {
  custom: {
    50: '#85a6df',
    500: '#3f83d1',
    950: '#000000',
  },
}

SCSS

$custom: #3f83d1;
$custom-light: #85a6df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83d1",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 209
  },
  "hsl": {
    "h": 212.055,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.60326,
    "c": 0.13779,
    "h": 253.7
  },
  "luminance": 0.21893
}

Semantic roles & 50–950 ramp

primary

#3F83D1

secondary

#D5B897

accent

#9943E4

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F83D1

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

Preview Lab → · Contrast checker → · Palette generator →