#3F79D9#3F79D9

#3F79D9 is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.6% C 0.159 H 259.9°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#3F79D9
RGB	rgb(63, 121, 217)
HSL	hsl(217, 67%, 55%)
HSV	hsv(217, 71%, 85%)
CMYK	cmyk(71%, 44.2%, 0%, 14.9%)
CIE-LAB	lab(51.54, 13.09, -54.77)
CIE-LCH	lch(51.54, 56.31, 283.44°)
OKLab	oklab(58.63% -0.0278 -0.1567)
OKLCH	oklch(58.63% 0.159 259.9)
XYZ	xyz(21.4071, 19.7390, 68.3140)
Luminance	0.1974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79D9 #D99F3F

analogous

#3FC6D9 #3F79D9 #523FD9

triadic

#3F79D9 #D93F79 #79D93F

tetradic

#3F79D9 #D93FC6 #D99F3F #3FD952

square

#3F79D9 #D93FC6 #D99F3F #3FD952

split-complementary

#3F79D9 #D9523F #C6D93F

monochromatic

#1A4284 #245BB7 #3F79D9 #729DE3 #A5C0ED

Accessibility & contrast

On white

4.24

#3F79D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#3F79D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79D9

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79D9	#FFFFFF	#000000	##000000
##3F79D9	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4982DD

Deuteranopia (green-blind)

#2B74D7

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f79d9;
/* rgb */ color: rgb(63, 121, 217);
/* oklch */ color: oklch(58.6% 0.159 259.9);

Tailwind

colors: {
  custom: {
    50: '#869fe5',
    500: '#3f79d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f79d9;
$custom-light: #869fe5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79d9",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 217
  },
  "hsl": {
    "h": 217.403,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.58631,
    "c": 0.1592,
    "h": 259.9
  },
  "luminance": 0.19741
}

Semantic roles & 50–950 ramp

primary

#3F79D9

secondary

#DAC29A

accent

#A93EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F79D9

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

Preview Lab → · Contrast checker → · Palette generator →