#3F79D7#3F79D7

#3F79D7 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.157 H 259.6°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F79D7
RGB	rgb(63, 121, 215)
HSL	hsl(217, 66%, 55%)
HSV	hsv(217, 71%, 84%)
CMYK	cmyk(70.7%, 43.7%, 0%, 15.7%)
CIE-LAB	lab(51.42, 12.37, -53.83)
CIE-LCH	lch(51.42, 55.23, 282.94°)
OKLab	oklab(58.5% -0.0282 -0.154)
OKLCH	oklch(58.5% 0.157 259.6)
XYZ	xyz(21.1486, 19.6356, 66.9523)
Luminance	0.1964 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79D7 #D79D3F

analogous

#3FC5D7 #3F79D7 #513FD7

triadic

#3F79D7 #D73F79 #79D73F

tetradic

#3F79D7 #D73FC5 #D79D3F #3FD751

square

#3F79D7 #D73FC5 #D79D3F #3FD751

split-complementary

#3F79D7 #D7513F #C5D73F

monochromatic

#1B4281 #255CB3 #3F79D7 #729CE2 #A4C0EC

Accessibility & contrast

On white

4.26

#3F79D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3F79D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79D7

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79D7	#FFFFFF	#000000	##000000
##3F79D7	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B82DB

Deuteranopia (green-blind)

#2F74D5

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f79d7;
/* rgb */ color: rgb(63, 121, 215);
/* oklch */ color: oklch(58.5% 0.157 259.6);

Tailwind

colors: {
  custom: {
    50: '#869fe4',
    500: '#3f79d7',
    950: '#000000',
  },
}

SCSS

$custom: #3f79d7;
$custom-light: #869fe4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79d7",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 215
  },
  "hsl": {
    "h": 217.105,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58502,
    "c": 0.15654,
    "h": 259.6
  },
  "luminance": 0.19638
}

Semantic roles & 50–950 ramp

primary

#3F79D7

secondary

#D9C199

accent

#A83FE8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3F79D7

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

Preview Lab → · Contrast checker → · Palette generator →