#3877D1#3877D1

#3877D1 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.4% C 0.153 H 257.8°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3877D1
RGB	rgb(56, 119, 209)
HSL	hsl(215, 62%, 52%)
HSV	hsv(215, 73%, 82%)
CMYK	cmyk(73.2%, 43.1%, 0%, 18%)
CIE-LAB	lab(50.26, 10.47, -52.30)
CIE-LCH	lch(50.26, 53.34, 281.32°)
OKLab	oklab(57.42% -0.0325 -0.1496)
OKLCH	oklch(57.42% 0.153 257.8)
XYZ	xyz(19.7321, 18.6357, 62.8663)
Luminance	0.1864 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3877D1 #D19238

analogous

#38C4D1 #3877D1 #4638D1

triadic

#3877D1 #D13877 #77D138

tetradic

#3877D1 #D138C4 #D19238 #38D146

square

#3877D1 #D138C4 #D19238 #38D146

split-complementary

#3877D1 #D14638 #C4D138

monochromatic

#1B3F74 #265BA6 #3877D1 #6A99DC #9BBBE8

Accessibility & contrast

On white

4.44

#3877D1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3877D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3877D1

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3877D1	#FFFFFF	#000000	##000000
##3877D1	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7FD4

Deuteranopia (green-blind)

#2F71CF

Tritanopia (blue-blind)

#008C9A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3877d1;
/* rgb */ color: rgb(56, 119, 209);
/* oklch */ color: oklch(57.4% 0.153 257.8);

Tailwind

colors: {
  custom: {
    50: '#829ddf',
    500: '#3877d1',
    950: '#000000',
  },
}

SCSS

$custom: #3877d1;
$custom-light: #829ddf;
$custom-dark: #000000;

JSON

{
  "hex": "#3877d1",
  "rgb": {
    "r": 56,
    "g": 119,
    "b": 209
  },
  "hsl": {
    "h": 215.294,
    "s": 62.449,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57418,
    "c": 0.15312,
    "h": 257.8
  },
  "luminance": 0.18638
}

Semantic roles & 50–950 ramp

primary

#3877D1

secondary

#D4B891

accent

#A242E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3877D1

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

Preview Lab → · Contrast checker → · Palette generator →