#3F83CF#3F83CF

#3F83CF is a mid, vivid cyan. Relative luminance 0.218; OKLCH L 60.2% C 0.135 H 253.1°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3F83CF
RGB	rgb(63, 131, 207)
HSL	hsl(212, 60%, 53%)
HSV	hsv(212, 70%, 81%)
CMYK	cmyk(69.6%, 36.7%, 0%, 18.8%)
CIE-LAB	lab(53.81, 3.41, -45.50)
CIE-LCH	lch(53.81, 45.63, 274.28°)
OKLab	oklab(60.21% -0.0392 -0.1294)
OKLCH	oklch(60.21% 0.135 253.1)
XYZ	xyz(21.4245, 21.7921, 62.0966)
Luminance	0.2179 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83CF #CF8B3F

analogous

#3FCBCF #3F83CF #433FCF

triadic

#3F83CF #CF3F83 #83CF3F

tetradic

#3F83CF #CF3FCB #CF8B3F #3FCF43

square

#3F83CF #CF3FCB #CF8B3F #3FCF43

split-complementary

#3F83CF #CF433F #CBCF3F

monochromatic

#1E4776 #2A65A7 #3F83CF #70A3DB #A1C2E7

Accessibility & contrast

On white

3.92

#3F83CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#3F83CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83CF

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83CF	#FFFFFF	#000000	##000000
##3F83CF	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6188D2

Deuteranopia (green-blind)

#4C7ACD

Tritanopia (blue-blind)

#00959F

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3f83cf;
/* rgb */ color: rgb(63, 131, 207);
/* oklch */ color: oklch(60.2% 0.135 253.1);

Tailwind

colors: {
  custom: {
    50: '#84a6de',
    500: '#3f83cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f83cf;
$custom-light: #84a6de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83cf",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 207
  },
  "hsl": {
    "h": 211.667,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.60209,
    "c": 0.13523,
    "h": 253.1
  },
  "luminance": 0.21794
}

Semantic roles & 50–950 ramp

primary

#3F83CF

secondary

#D4B796

accent

#9845E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F83CF

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

Preview Lab → · Contrast checker → · Palette generator →