#3F78D6#3F78D6

#3F78D6 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.2% C 0.156 H 259.9°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F78D6
RGB	rgb(63, 120, 214)
HSL	hsl(217, 65%, 54%)
HSV	hsv(217, 71%, 84%)
CMYK	cmyk(70.6%, 43.9%, 0%, 16.1%)
CIE-LAB	lab(51.09, 12.63, -53.80)
CIE-LCH	lch(51.09, 55.26, 283.21°)
OKLab	oklab(58.22% -0.0275 -0.1539)
OKLCH	oklch(58.22% 0.156 259.9)
XYZ	xyz(20.8996, 19.3425, 66.2373)
Luminance	0.1935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F78D6 #D69D3F

analogous

#3FC4D6 #3F78D6 #523FD6

triadic

#3F78D6 #D63F78 #78D63F

tetradic

#3F78D6 #D63FC4 #D69D3F #3FD652

square

#3F78D6 #D63FC4 #D69D3F #3FD652

split-complementary

#3F78D6 #D6523F #C4D63F

monochromatic

#1B417F #265BB2 #3F78D6 #719BE1 #A4BFEC

Accessibility & contrast

On white

4.31

#3F78D6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3F78D6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F78D6

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F78D6	#FFFFFF	#000000	##000000
##3F78D6	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4981DA

Deuteranopia (green-blind)

#2D73D4

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f78d6;
/* rgb */ color: rgb(63, 120, 214);
/* oklch */ color: oklch(58.2% 0.156 259.9);

Tailwind

colors: {
  custom: {
    50: '#869ee3',
    500: '#3f78d6',
    950: '#000000',
  },
}

SCSS

$custom: #3f78d6;
$custom-light: #869ee3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f78d6",
  "rgb": {
    "r": 63,
    "g": 120,
    "b": 214
  },
  "hsl": {
    "h": 217.351,
    "s": 64.807,
    "l": 54.314
  },
  "oklch": {
    "l": 0.58223,
    "c": 0.15636,
    "h": 259.9
  },
  "luminance": 0.19345
}

Semantic roles & 50–950 ramp

primary

#3F78D6

secondary

#D8C098

accent

#A840E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3F78D6

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

Preview Lab → · Contrast checker → · Palette generator →