#3B78D3#3B78D3

#3B78D3 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.154 H 258.4°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3B78D3
RGB	rgb(59, 120, 211)
HSL	hsl(216, 63%, 53%)
HSV	hsv(216, 72%, 83%)
CMYK	cmyk(72%, 43.1%, 0%, 17.3%)
CIE-LAB	lab(50.76, 10.98, -52.63)
CIE-LCH	lch(50.76, 53.76, 281.79°)
OKLab	oklab(57.87% -0.0309 -0.1505)
OKLCH	oklch(57.87% 0.154 258.4)
XYZ	xyz(20.2737, 19.0637, 64.2266)
Luminance	0.1907 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B78D3 #D3963B

analogous

#3BC4D3 #3B78D3 #4A3BD3

triadic

#3B78D3 #D33B78 #78D33B

tetradic

#3B78D3 #D33BC4 #D3963B #3BD34A

square

#3B78D3 #D33BC4 #D3963B #3BD34A

split-complementary

#3B78D3 #D34A3B #C4D33B

monochromatic

#1B4179 #265BAB #3B78D3 #6D9ADE #9FBDE9

Accessibility & contrast

On white

4.36

#3B78D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3B78D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78D3

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B78D3	#FFFFFF	#000000	##000000
##3B78D3	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B80D7

Deuteranopia (green-blind)

#3072D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3b78d3;
/* rgb */ color: rgb(59, 120, 211);
/* oklch */ color: oklch(57.9% 0.154 258.4);

Tailwind

colors: {
  custom: {
    50: '#839ee1',
    500: '#3b78d3',
    950: '#000000',
  },
}

SCSS

$custom: #3b78d3;
$custom-light: #839ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#3b78d3",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 211
  },
  "hsl": {
    "h": 215.921,
    "s": 63.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57874,
    "c": 0.15367,
    "h": 258.4
  },
  "luminance": 0.19066
}

Semantic roles & 50–950 ramp

primary

#3B78D3

secondary

#D6BB94

accent

#A441E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B78D3

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

Preview Lab → · Contrast checker → · Palette generator →