#3F79D5#3F79D5

#3F79D5 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.4% C 0.154 H 259.3°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F79D5
RGB	rgb(63, 121, 213)
HSL	hsl(217, 64%, 54%)
HSV	hsv(217, 70%, 84%)
CMYK	cmyk(70.4%, 43.2%, 0%, 16.5%)
CIE-LAB	lab(51.31, 11.65, -52.88)
CIE-LCH	lch(51.31, 54.15, 282.42°)
OKLab	oklab(58.37% -0.0286 -0.1512)
OKLCH	oklch(58.37% 0.154 259.3)
XYZ	xyz(20.8932, 19.5334, 65.6071)
Luminance	0.1954 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79D5 #D59B3F

analogous

#3FC4D5 #3F79D5 #503FD5

triadic

#3F79D5 #D53F79 #79D53F

tetradic

#3F79D5 #D53FC4 #D59B3F #3FD550

square

#3F79D5 #D53FC4 #D59B3F #3FD550

split-complementary

#3F79D5 #D5503F #C4D53F

monochromatic

#1C427E #275CB0 #3F79D5 #719CE0 #A3BFEB

Accessibility & contrast

On white

4.28

#3F79D5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3F79D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79D5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79D5	#FFFFFF	#000000	##000000
##3F79D5	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C82D9

Deuteranopia (green-blind)

#3174D3

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f79d5;
/* rgb */ color: rgb(63, 121, 213);
/* oklch */ color: oklch(58.4% 0.154 259.3);

Tailwind

colors: {
  custom: {
    50: '#859fe2',
    500: '#3f79d5',
    950: '#000000',
  },
}

SCSS

$custom: #3f79d5;
$custom-light: #859fe2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79d5",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 213
  },
  "hsl": {
    "h": 216.8,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58374,
    "c": 0.15389,
    "h": 259.3
  },
  "luminance": 0.19536
}

Semantic roles & 50–950 ramp

primary

#3F79D5

secondary

#D8BF98

accent

#A741E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F79D5

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

Preview Lab → · Contrast checker → · Palette generator →