#3F83CC#3F83CC

#3F83CC is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 60.0% C 0.131 H 252.3°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F83CC
RGB	rgb(63, 131, 204)
HSL	hsl(211, 58%, 52%)
HSV	hsv(211, 69%, 80%)
CMYK	cmyk(69.1%, 35.8%, 0%, 20%)
CIE-LAB	lab(53.65, 2.35, -44.05)
CIE-LCH	lch(53.65, 44.11, 273.05°)
OKLab	oklab(60.04% -0.04 -0.1252)
OKLCH	oklch(60.04% 0.131 252.3)
XYZ	xyz(21.0612, 21.6468, 60.1833)
Luminance	0.2165 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83CC #CC883F

analogous

#3FCACC #3F83CC #423FCC

triadic

#3F83CC #CC3F83 #83CC3F

tetradic

#3F83CC #CC3FCA #CC883F #3FCC42

square

#3F83CC #CC3FCA #CC883F #3FCC42

split-complementary

#3F83CC #CC423F #CACC3F

monochromatic

#1E4772 #2B65A3 #3F83CC #6FA2D9 #A0C1E6

Accessibility & contrast

On white

3.94

#3F83CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#3F83CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83CC

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83CC	#FFFFFF	#000000	##000000
##3F83CC	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6287CF

Deuteranopia (green-blind)

#4E7ACB

Tritanopia (blue-blind)

#00949E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f83cc;
/* rgb */ color: rgb(63, 131, 204);
/* oklch */ color: oklch(60.0% 0.131 252.3);

Tailwind

colors: {
  custom: {
    50: '#84a6dc',
    500: '#3f83cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f83cc;
$custom-light: #84a6dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83cc",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 204
  },
  "hsl": {
    "h": 211.064,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.60037,
    "c": 0.13139,
    "h": 252.3
  },
  "luminance": 0.21649
}

Semantic roles & 50–950 ramp

primary

#3F83CC

secondary

#D2B495

accent

#9747E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F83CC

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

Preview Lab → · Contrast checker → · Palette generator →