#3F84DB#3F84DB

#3F84DB is a mid, vivid cyan. Relative luminance 0.227; OKLCH L 61.1% C 0.150 H 255.6°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#3F84DB
RGB	rgb(63, 132, 219)
HSL	hsl(213, 68%, 55%)
HSV	hsv(213, 71%, 86%)
CMYK	cmyk(71.2%, 39.7%, 0%, 14.1%)
CIE-LAB	lab(54.73, 7.07, -50.80)
CIE-LCH	lch(54.73, 51.29, 277.92°)
OKLab	oklab(61.14% -0.0373 -0.1449)
OKLCH	oklch(61.14% 0.15 255.6)
XYZ	xyz(23.0826, 22.6713, 70.1636)
Luminance	0.2267 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F84DB #DB963F

analogous

#3FD2DB #3F84DB #483FDB

triadic

#3F84DB #DB3F84 #84DB3F

tetradic

#3F84DB #DB3FD2 #DB963F #3FDB48

square

#3F84DB #DB3FD2 #DB963F #3FDB48

split-complementary

#3F84DB #DB483F #D2DB3F

monochromatic

#194986 #2366BA #3F84DB #73A5E5 #A6C6EE

Accessibility & contrast

On white

3.79

#3F84DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#3F84DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F84DB

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F84DB	#FFFFFF	#000000	##000000
##3F84DB	1.00	3.79	5.53	5.53
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B8BDE

Deuteranopia (green-blind)

#437CD9

Tritanopia (blue-blind)

#0098A5

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3f84db;
/* rgb */ color: rgb(63, 132, 219);
/* oklch */ color: oklch(61.1% 0.150 255.6);

Tailwind

colors: {
  custom: {
    50: '#86a7e6',
    500: '#3f84db',
    950: '#000000',
  },
}

SCSS

$custom: #3f84db;
$custom-light: #86a7e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f84db",
  "rgb": {
    "r": 63,
    "g": 132,
    "b": 219
  },
  "hsl": {
    "h": 213.462,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.61141,
    "c": 0.14964,
    "h": 255.6
  },
  "luminance": 0.22674
}

Semantic roles & 50–950 ramp

primary

#3F84DB

secondary

#DCBF9A

accent

#9E3DEB

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #3F84DB

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

Preview Lab → · Contrast checker → · Palette generator →