#3F79CF#3F79CF

#3F79CF is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.0% C 0.146 H 258.2°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F79CF
RGB	rgb(63, 121, 207)
HSL	hsl(216, 60%, 53%)
HSV	hsv(216, 70%, 81%)
CMYK	cmyk(69.6%, 41.5%, 0%, 18.8%)
CIE-LAB	lab(50.96, 9.49, -50.03)
CIE-LCH	lch(50.96, 50.92, 280.75°)
OKLab	oklab(58% -0.0298 -0.1428)
OKLCH	oklch(58% 0.146 258.2)
XYZ	xyz(20.1457, 19.2344, 61.6703)
Luminance	0.1924 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79CF #CF953F

analogous

#3FC1CF #3F79CF #4D3FCF

triadic

#3F79CF #CF3F79 #79CF3F

tetradic

#3F79CF #CF3FC1 #CF953F #3FCF4D

square

#3F79CF #CF3FC1 #CF953F #3FCF4D

split-complementary

#3F79CF #CF4D3F #C1CF3F

monochromatic

#1E4176 #2A5CA7 #3F79CF #709BDB #A1BDE7

Accessibility & contrast

On white

4.33

#3F79CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3F79CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79CF

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79CF	#FFFFFF	#000000	##000000
##3F79CF	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5081D2

Deuteranopia (green-blind)

#3973CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f79cf;
/* rgb */ color: rgb(63, 121, 207);
/* oklch */ color: oklch(58.0% 0.146 258.2);

Tailwind

colors: {
  custom: {
    50: '#849fde',
    500: '#3f79cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f79cf;
$custom-light: #849fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79cf",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 207
  },
  "hsl": {
    "h": 215.833,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57995,
    "c": 0.14589,
    "h": 258.2
  },
  "luminance": 0.19236
}

Semantic roles & 50–950 ramp

primary

#3F79CF

secondary

#D4BB96

accent

#A345E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F79CF

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

Preview Lab → · Contrast checker → · Palette generator →