#3F79DA#3F79DA

#3F79DA is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.7% C 0.161 H 260.1°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F79DA
RGB	rgb(63, 121, 218)
HSL	hsl(218, 68%, 55%)
HSV	hsv(218, 71%, 85%)
CMYK	cmyk(71.1%, 44.5%, 0%, 14.5%)
CIE-LAB	lab(51.60, 13.45, -55.24)
CIE-LCH	lch(51.60, 56.85, 283.68°)
OKLab	oklab(58.7% -0.0277 -0.1581)
OKLCH	oklch(58.7% 0.161 260.1)
XYZ	xyz(21.5376, 19.7912, 69.0011)
Luminance	0.1979 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79DA #DAA03F

analogous

#3FC7DA #3F79DA #523FDA

triadic

#3F79DA #DA3F79 #79DA3F

tetradic

#3F79DA #DA3FC7 #DAA03F #3FDA52

square

#3F79DA #DA3FC7 #DAA03F #3FDA52

split-complementary

#3F79DA #DA523F #C7DA3F

monochromatic

#1A4285 #245BB8 #3F79DA #729DE4 #A6C1EE

Accessibility & contrast

On white

4.24

#3F79DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3F79DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79DA

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79DA	#FFFFFF	#000000	##000000
##3F79DA	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4883DE

Deuteranopia (green-blind)

#2A74D8

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f79da;
/* rgb */ color: rgb(63, 121, 218);
/* oklch */ color: oklch(58.7% 0.161 260.1);

Tailwind

colors: {
  custom: {
    50: '#869fe6',
    500: '#3f79da',
    950: '#000000',
  },
}

SCSS

$custom: #3f79da;
$custom-light: #869fe6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79da",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 218
  },
  "hsl": {
    "h": 217.548,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58696,
    "c": 0.16053,
    "h": 260.1
  },
  "luminance": 0.19793
}

Semantic roles & 50–950 ramp

primary

#3F79DA

secondary

#DBC39A

accent

#AA3DEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F79DA

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

Preview Lab → · Contrast checker → · Palette generator →