#3A78D4#3A78D4

#3A78D4 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.155 H 258.3°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3A78D4
RGB	rgb(58, 120, 212)
HSL	hsl(216, 64%, 53%)
HSV	hsv(216, 73%, 83%)
CMYK	cmyk(72.6%, 43.4%, 0%, 16.9%)
CIE-LAB	lab(50.78, 11.21, -53.16)
CIE-LCH	lch(50.78, 54.33, 281.91°)
OKLab	oklab(57.9% -0.0314 -0.1521)
OKLCH	oklch(57.9% 0.155 258.3)
XYZ	xyz(20.3407, 19.0837, 64.8861)
Luminance	0.1909 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78D4 #D4963A

analogous

#3AC5D4 #3A78D4 #493AD4

triadic

#3A78D4 #D43A78 #78D43A

tetradic

#3A78D4 #D43AC5 #D4963A #3AD449

square

#3A78D4 #D43AC5 #D4963A #3AD449

split-complementary

#3A78D4 #D4493A #C5D43A

monochromatic

#1A4179 #255BAB #3A78D4 #6C9ADF #9EBDEA

Accessibility & contrast

On white

4.36

#3A78D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#3A78D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78D4

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78D4	#FFFFFF	#000000	##000000
##3A78D4	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A81D8

Deuteranopia (green-blind)

#2E72D2

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3a78d4;
/* rgb */ color: rgb(58, 120, 212);
/* oklch */ color: oklch(57.9% 0.155 258.3);

Tailwind

colors: {
  custom: {
    50: '#839ee2',
    500: '#3a78d4',
    950: '#000000',
  },
}

SCSS

$custom: #3a78d4;
$custom-light: #839ee2;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78d4",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 212
  },
  "hsl": {
    "h": 215.844,
    "s": 64.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57902,
    "c": 0.15532,
    "h": 258.3
  },
  "luminance": 0.19086
}

Semantic roles & 50–950 ramp

primary

#3A78D4

secondary

#D6BB94

accent

#A441E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78D4

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

Preview Lab → · Contrast checker → · Palette generator →