#3A78CF#3A78CF

#3A78CF is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.6% C 0.149 H 257.4°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3A78CF
RGB	rgb(58, 120, 207)
HSL	hsl(215, 61%, 52%)
HSV	hsv(215, 72%, 81%)
CMYK	cmyk(72%, 42%, 0%, 18.8%)
CIE-LAB	lab(50.49, 9.39, -50.78)
CIE-LCH	lch(50.49, 51.64, 280.47°)
OKLab	oklab(57.58% -0.0324 -0.1451)
OKLCH	oklch(57.58% 0.149 257.4)
XYZ	xyz(19.7198, 18.8353, 61.6157)
Luminance	0.1884 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78CF #CF913A

analogous

#3AC2CF #3A78CF #473ACF

triadic

#3A78CF #CF3A78 #78CF3A

tetradic

#3A78CF #CF3AC2 #CF913A #3ACF47

square

#3A78CF #CF3AC2 #CF913A #3ACF47

split-complementary

#3A78CF #CF473A #C2CF3A

monochromatic

#1C4073 #285CA4 #3A78CF #6B9ADB #9CBBE7

Accessibility & contrast

On white

4.40

#3A78CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3A78CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78CF

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78CF	#FFFFFF	#000000	##000000
##3A78CF	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E80D2

Deuteranopia (green-blind)

#3472CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3a78cf;
/* rgb */ color: rgb(58, 120, 207);
/* oklch */ color: oklch(57.6% 0.149 257.4);

Tailwind

colors: {
  custom: {
    50: '#829ede',
    500: '#3a78cf',
    950: '#000000',
  },
}

SCSS

$custom: #3a78cf;
$custom-light: #829ede;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78cf",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 215.034,
    "s": 60.816,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57582,
    "c": 0.1487,
    "h": 257.4
  },
  "luminance": 0.18837
}

Semantic roles & 50–950 ramp

primary

#3A78CF

secondary

#D3B892

accent

#A144E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78CF

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

Preview Lab → · Contrast checker → · Palette generator →