#3A78DF#3A78DF

#3A78DF is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.6% C 0.170 H 260.0°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3A78DF
RGB	rgb(58, 120, 223)
HSL	hsl(217, 72%, 55%)
HSV	hsv(217, 74%, 87%)
CMYK	cmyk(74%, 46.2%, 0%, 12.5%)
CIE-LAB	lab(51.45, 15.22, -58.31)
CIE-LCH	lch(51.45, 60.27, 284.63°)
OKLab	oklab(58.63% -0.0295 -0.1673)
OKLCH	oklch(58.63% 0.17 260)
XYZ	xyz(21.7759, 19.6578, 72.4444)
Luminance	0.1966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78DF #DFA13A

analogous

#3ACADF #3A78DF #4F3ADF

triadic

#3A78DF #DF3A78 #78DF3A

tetradic

#3A78DF #DF3ACA #DFA13A #3ADF4F

square

#3A78DF #DF3ACA #DFA13A #3ADF4F

split-complementary

#3A78DF #DF4F3A #CADF3A

monochromatic

#164188 #1F5ABD #3A78DF #6F9CE8 #A3C0F0

Accessibility & contrast

On white

4.26

#3A78DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3A78DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78DF

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78DF	#FFFFFF	#000000	##000000
##3A78DF	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4183E3

Deuteranopia (green-blind)

#1874DD

Tritanopia (blue-blind)

#0090A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3a78df;
/* rgb */ color: rgb(58, 120, 223);
/* oklch */ color: oklch(58.6% 0.170 260.0);

Tailwind

colors: {
  custom: {
    50: '#859eea',
    500: '#3a78df',
    950: '#000000',
  },
}

SCSS

$custom: #3a78df;
$custom-light: #859eea;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78df",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 223
  },
  "hsl": {
    "h": 217.455,
    "s": 72.052,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58627,
    "c": 0.16985,
    "h": 260
  },
  "luminance": 0.1966
}

Semantic roles & 50–950 ramp

primary

#3A78DF

secondary

#DDC398

accent

#AA39EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3A78DF

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

Preview Lab → · Contrast checker → · Palette generator →