#3879DF#3879DF

#3879DF is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.8% C 0.169 H 259.2°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3879DF
RGB	rgb(56, 121, 223)
HSL	hsl(217, 72%, 55%)
HSV	hsv(217, 75%, 87%)
CMYK	cmyk(74.9%, 45.7%, 0%, 12.5%)
CIE-LAB	lab(51.66, 14.36, -57.98)
CIE-LCH	lch(51.66, 59.73, 283.91°)
OKLab	oklab(58.77% -0.0316 -0.1663)
OKLCH	oklch(58.77% 0.169 259.2)
XYZ	xyz(21.7827, 19.8407, 72.4794)
Luminance	0.1984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3879DF #DF9E38

analogous

#38CCDF #3879DF #4B38DF

triadic

#3879DF #DF3879 #79DF38

tetradic

#3879DF #DF38CC #DF9E38 #38DF4B

square

#3879DF #DF38CC #DF9E38 #38DF4B

split-complementary

#3879DF #DF4B38 #CCDF38

monochromatic

#164287 #1E5BBC #3879DF #6D9DE7 #A1C0F0

Accessibility & contrast

On white

4.23

#3879DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#3879DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3879DF

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3879DF	#FFFFFF	#000000	##000000
##3879DF	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4383E3

Deuteranopia (green-blind)

#1B74DD

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3879df;
/* rgb */ color: rgb(56, 121, 223);
/* oklch */ color: oklch(58.8% 0.169 259.2);

Tailwind

colors: {
  custom: {
    50: '#859fea',
    500: '#3879df',
    950: '#000000',
  },
}

SCSS

$custom: #3879df;
$custom-light: #859fea;
$custom-dark: #000000;

JSON

{
  "hex": "#3879df",
  "rgb": {
    "r": 56,
    "g": 121,
    "b": 223
  },
  "hsl": {
    "h": 216.647,
    "s": 72.294,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58768,
    "c": 0.16929,
    "h": 259.2
  },
  "luminance": 0.19843
}

Semantic roles & 50–950 ramp

primary

#3879DF

secondary

#DDC196

accent

#A839EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3879DF

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

Preview Lab → · Contrast checker → · Palette generator →