#3F79DC#3F79DC

#3F79DC is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.8% C 0.163 H 260.4°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F79DC
RGB	rgb(63, 121, 220)
HSL	hsl(218, 69%, 55%)
HSV	hsv(218, 71%, 86%)
CMYK	cmyk(71.4%, 45%, 0%, 13.7%)
CIE-LAB	lab(51.72, 14.17, -56.17)
CIE-LCH	lch(51.72, 57.93, 284.16°)
OKLab	oklab(58.83% -0.0273 -0.1609)
OKLCH	oklch(58.83% 0.163 260.4)
XYZ	xyz(21.8009, 19.8965, 70.3877)
Luminance	0.1990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79DC #DCA23F

analogous

#3FC8DC #3F79DC #533FDC

triadic

#3F79DC #DC3F79 #79DC3F

tetradic

#3F79DC #DC3FC8 #DCA23F #3FDC53

square

#3F79DC #DC3FC8 #DCA23F #3FDC53

split-complementary

#3F79DC #DC533F #C8DC3F

monochromatic

#194288 #225BBC #3F79DC #739DE5 #A7C1EF

Accessibility & contrast

On white

4.22

#3F79DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#3F79DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79DC

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79DC	#FFFFFF	#000000	##000000
##3F79DC	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4783E0

Deuteranopia (green-blind)

#2675DA

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f79dc;
/* rgb */ color: rgb(63, 121, 220);
/* oklch */ color: oklch(58.8% 0.163 260.4);

Tailwind

colors: {
  custom: {
    50: '#879fe7',
    500: '#3f79dc',
    950: '#000000',
  },
}

SCSS

$custom: #3f79dc;
$custom-light: #879fe7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79dc",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 220
  },
  "hsl": {
    "h": 217.834,
    "s": 69.163,
    "l": 55.49
  },
  "oklch": {
    "l": 0.58827,
    "c": 0.16319,
    "h": 260.4
  },
  "luminance": 0.19899
}

Semantic roles & 50–950 ramp

primary

#3F79DC

secondary

#DCC49B

accent

#AB3CEC

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #3F79DC

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

Preview Lab → · Contrast checker → · Palette generator →