#3F83D9#3F83D9

#3F83D9 is a mid, vivid cyan. Relative luminance 0.223; OKLCH L 60.8% C 0.148 H 255.6°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F83D9
RGB	rgb(63, 131, 217)
HSL	hsl(214, 67%, 55%)
HSV	hsv(214, 71%, 85%)
CMYK	cmyk(71%, 39.6%, 0%, 14.9%)
CIE-LAB	lab(54.34, 6.96, -50.30)
CIE-LCH	lch(54.34, 50.78, 277.88°)
OKLab	oklab(60.8% -0.0369 -0.1435)
OKLCH	oklch(60.8% 0.148 255.6)
XYZ	xyz(22.6860, 22.2967, 68.7403)
Luminance	0.2230 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83D9 #D9953F

analogous

#3FD0D9 #3F83D9 #483FD9

triadic

#3F83D9 #D93F83 #83D93F

tetradic

#3F83D9 #D93FD0 #D9953F #3FD948

square

#3F83D9 #D93FD0 #D9953F #3FD948

split-complementary

#3F83D9 #D9483F #D0D93F

monochromatic

#1A4984 #2465B7 #3F83D9 #72A4E3 #A5C5ED

Accessibility & contrast

On white

3.85

#3F83D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#3F83D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83D9

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83D9	#FFFFFF	#000000	##000000
##3F83D9	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B8ADC

Deuteranopia (green-blind)

#437BD7

Tritanopia (blue-blind)

#0097A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3f83d9;
/* rgb */ color: rgb(63, 131, 217);
/* oklch */ color: oklch(60.8% 0.148 255.6);

Tailwind

colors: {
  custom: {
    50: '#86a6e5',
    500: '#3f83d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f83d9;
$custom-light: #86a6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83d9",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 217
  },
  "hsl": {
    "h": 213.506,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.608,
    "c": 0.14812,
    "h": 255.6
  },
  "luminance": 0.22299
}

Semantic roles & 50–950 ramp

primary

#3F83D9

secondary

#DABE9A

accent

#9E3EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #3F83D9

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

Preview Lab → · Contrast checker → · Palette generator →