#3A78D3#3A78D3

#3A78D3 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.8% C 0.154 H 258.2°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3A78D3
RGB	rgb(58, 120, 211)
HSL	hsl(216, 63%, 53%)
HSV	hsv(216, 73%, 83%)
CMYK	cmyk(72.5%, 43.1%, 0%, 17.3%)
CIE-LAB	lab(50.73, 10.84, -52.68)
CIE-LCH	lch(50.73, 53.79, 281.63°)
OKLab	oklab(57.84% -0.0316 -0.1507)
OKLCH	oklch(57.84% 0.154 258.2)
XYZ	xyz(20.2150, 19.0334, 64.2238)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78D3 #D3953A

analogous

#3AC5D3 #3A78D3 #483AD3

triadic

#3A78D3 #D33A78 #78D33A

tetradic

#3A78D3 #D33AC5 #D3953A #3AD348

square

#3A78D3 #D33AC5 #D3953A #3AD348

split-complementary

#3A78D3 #D3483A #C5D33A

monochromatic

#1B4078 #265BAA #3A78D3 #6C9ADE #9EBDE9

Accessibility & contrast

On white

4.37

#3A78D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3A78D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78D3

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78D3	#FFFFFF	#000000	##000000
##3A78D3	1.00	4.37	4.81	4.81
#FFFFFF	4.37	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)

#2F72D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3a78d3;
/* rgb */ color: rgb(58, 120, 211);
/* oklch */ color: oklch(57.8% 0.154 258.2);

Tailwind

colors: {
  custom: {
    50: '#839ee1',
    500: '#3a78d3',
    950: '#000000',
  },
}

SCSS

$custom: #3a78d3;
$custom-light: #839ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78d3",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 211
  },
  "hsl": {
    "h": 215.686,
    "s": 63.485,
    "l": 52.745
  },
  "oklch": {
    "l": 0.57837,
    "c": 0.154,
    "h": 258.2
  },
  "luminance": 0.19036
}

Semantic roles & 50–950 ramp

primary

#3A78D3

secondary

#D6BB93

accent

#A441E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78D3

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

Preview Lab → · Contrast checker → · Palette generator →