#3878D2#3878D2

#3878D2 is a mid, vivid blue. Relative luminance 0.189; OKLCH L 57.7% C 0.153 H 257.5°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3878D2
RGB	rgb(56, 120, 210)
HSL	hsl(215, 63%, 52%)
HSV	hsv(215, 73%, 82%)
CMYK	cmyk(73.3%, 42.9%, 0%, 17.6%)
CIE-LAB	lab(50.60, 10.21, -52.32)
CIE-LCH	lch(50.60, 53.31, 281.04°)
OKLab	oklab(57.7% -0.0332 -0.1497)
OKLCH	oklch(57.7% 0.153 257.5)
XYZ	xyz(19.9760, 18.9246, 63.5603)
Luminance	0.1893 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878D2 #D29238

analogous

#38C5D2 #3878D2 #4538D2

triadic

#3878D2 #D23878 #78D238

tetradic

#3878D2 #D238C5 #D29238 #38D245

square

#3878D2 #D238C5 #D29238 #38D245

split-complementary

#3878D2 #D24538 #C5D238

monochromatic

#1A4075 #265BA7 #3878D2 #6A9ADD #9CBCE9

Accessibility & contrast

On white

4.39

#3878D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#3878D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3878D2

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878D2	#FFFFFF	#000000	##000000
##3878D2	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C80D5

Deuteranopia (green-blind)

#3072D0

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3878d2;
/* rgb */ color: rgb(56, 120, 210);
/* oklch */ color: oklch(57.7% 0.153 257.5);

Tailwind

colors: {
  custom: {
    50: '#829ee0',
    500: '#3878d2',
    950: '#000000',
  },
}

SCSS

$custom: #3878d2;
$custom-light: #829ee0;
$custom-dark: #000000;

JSON

{
  "hex": "#3878d2",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 210
  },
  "hsl": {
    "h": 215.065,
    "s": 63.115,
    "l": 52.157
  },
  "oklch": {
    "l": 0.577,
    "c": 0.15332,
    "h": 257.5
  },
  "luminance": 0.18927
}

Semantic roles & 50–950 ramp

primary

#3878D2

secondary

#D5B991

accent

#A242E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3878D2

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

Preview Lab → · Contrast checker → · Palette generator →