#3877D3#3877D3

#3877D3 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.5% C 0.156 H 258.1°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3877D3
RGB	rgb(56, 119, 211)
HSL	hsl(216, 64%, 52%)
HSV	hsv(216, 73%, 83%)
CMYK	cmyk(73.5%, 43.6%, 0%, 17.3%)
CIE-LAB	lab(50.38, 11.20, -53.25)
CIE-LCH	lch(50.38, 54.41, 281.88°)
OKLab	oklab(57.55% -0.0321 -0.1524)
OKLCH	oklch(57.55% 0.156 258.1)
XYZ	xyz(19.9813, 18.7353, 64.1786)
Luminance	0.1874 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3877D3 #D39438

analogous

#38C4D3 #3877D3 #4738D3

triadic

#3877D3 #D33877 #77D338

tetradic

#3877D3 #D338C4 #D39438 #38D347

square

#3877D3 #D338C4 #D39438 #38D347

split-complementary

#3877D3 #D34738 #C4D338

monochromatic

#1A4076 #255BA9 #3877D3 #6A99DE #9CBCE9

Accessibility & contrast

On white

4.42

#3877D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3877D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3877D3

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3877D3	#FFFFFF	#000000	##000000
##3877D3	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4980D7

Deuteranopia (green-blind)

#2C71D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3877d3;
/* rgb */ color: rgb(56, 119, 211);
/* oklch */ color: oklch(57.5% 0.156 258.1);

Tailwind

colors: {
  custom: {
    50: '#829de1',
    500: '#3877d3',
    950: '#000000',
  },
}

SCSS

$custom: #3877d3;
$custom-light: #829de1;
$custom-dark: #000000;

JSON

{
  "hex": "#3877d3",
  "rgb": {
    "r": 56,
    "g": 119,
    "b": 211
  },
  "hsl": {
    "h": 215.613,
    "s": 63.786,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57547,
    "c": 0.15576,
    "h": 258.1
  },
  "luminance": 0.18738
}

Semantic roles & 50–950 ramp

primary

#3877D3

secondary

#D5BA92

accent

#A341E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3877D3

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

Preview Lab → · Contrast checker → · Palette generator →