#3F83DD#3F83DD

#3F83DD is a mid, vivid cyan. Relative luminance 0.225; OKLCH L 61.0% C 0.153 H 256.4°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F83DD
RGB	rgb(63, 131, 221)
HSL	hsl(214, 70%, 56%)
HSV	hsv(214, 71%, 87%)
CMYK	cmyk(71.5%, 40.7%, 0%, 13.3%)
CIE-LAB	lab(54.56, 8.39, -52.19)
CIE-LCH	lch(54.56, 52.86, 279.13°)
OKLab	oklab(61.04% -0.036 -0.149)
OKLCH	oklch(61.04% 0.153 256.4)
XYZ	xyz(23.2126, 22.5073, 71.5136)
Luminance	0.2251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83DD #DD993F

analogous

#3FD2DD #3F83DD #4A3FDD

triadic

#3F83DD #DD3F83 #83DD3F

tetradic

#3F83DD #DD3FD2 #DD993F #3FDD4A

square

#3F83DD #DD3FD2 #DD993F #3FDD4A

split-complementary

#3F83DD #DD4A3F #D2DD3F

monochromatic

#184989 #2265BD #3F83DD #73A5E6 #A7C6EF

Accessibility & contrast

On white

3.82

#3F83DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#3F83DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83DD

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83DD	#FFFFFF	#000000	##000000
##3F83DD	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#588AE1

Deuteranopia (green-blind)

#3E7CDB

Tritanopia (blue-blind)

#0098A5

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3f83dd;
/* rgb */ color: rgb(63, 131, 221);
/* oklch */ color: oklch(61.0% 0.153 256.4);

Tailwind

colors: {
  custom: {
    50: '#87a6e8',
    500: '#3f83dd',
    950: '#000000',
  },
}

SCSS

$custom: #3f83dd;
$custom-light: #87a6e8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83dd",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 221
  },
  "hsl": {
    "h": 214.177,
    "s": 69.912,
    "l": 55.686
  },
  "oklch": {
    "l": 0.61044,
    "c": 0.15331,
    "h": 256.4
  },
  "luminance": 0.2251
}

Semantic roles & 50–950 ramp

primary

#3F83DD

secondary

#DDC09B

accent

#A03BED

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #3F83DD

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

Preview Lab → · Contrast checker → · Palette generator →