#3F83DB#3F83DB

#3F83DB is a mid, vivid cyan. Relative luminance 0.224; OKLCH L 60.9% C 0.151 H 256.0°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F83DB
RGB	rgb(63, 131, 219)
HSL	hsl(214, 68%, 55%)
HSV	hsv(214, 71%, 86%)
CMYK	cmyk(71.2%, 40.2%, 0%, 14.1%)
CIE-LAB	lab(54.45, 7.68, -51.25)
CIE-LCH	lch(54.45, 51.82, 278.52°)
OKLab	oklab(60.92% -0.0364 -0.1462)
OKLCH	oklch(60.92% 0.151 256)
XYZ	xyz(22.9477, 22.4013, 70.1186)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83DB #DB973F

analogous

#3FD1DB #3F83DB #493FDB

triadic

#3F83DB #DB3F83 #83DB3F

tetradic

#3F83DB #DB3FD1 #DB973F #3FDB49

square

#3F83DB #DB3FD1 #DB973F #3FDB49

split-complementary

#3F83DB #DB493F #D1DB3F

monochromatic

#194986 #2365BA #3F83DB #73A4E5 #A6C6EE

Accessibility & contrast

On white

3.83

#3F83DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#3F83DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83DB

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83DB	#FFFFFF	#000000	##000000
##3F83DB	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A8ADE

Deuteranopia (green-blind)

#417CD9

Tritanopia (blue-blind)

#0098A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3f83db;
/* rgb */ color: rgb(63, 131, 219);
/* oklch */ color: oklch(60.9% 0.151 256.0);

Tailwind

colors: {
  custom: {
    50: '#86a6e6',
    500: '#3f83db',
    950: '#000000',
  },
}

SCSS

$custom: #3f83db;
$custom-light: #86a6e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83db",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 219
  },
  "hsl": {
    "h": 213.846,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.60922,
    "c": 0.15071,
    "h": 256
  },
  "luminance": 0.22404
}

Semantic roles & 50–950 ramp

primary

#3F83DB

secondary

#DCBF9A

accent

#9F3DEB

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #3F83DB

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

Preview Lab → · Contrast checker → · Palette generator →