#3871C5#3871C5

#3871C5 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.3% C 0.144 H 258.2°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3871C5
RGB	rgb(56, 113, 197)
HSL	hsl(216, 56%, 50%)
HSV	hsv(216, 72%, 77%)
CMYK	cmyk(71.6%, 42.6%, 0%, 22.7%)
CIE-LAB	lab(47.85, 9.81, -49.29)
CIE-LCH	lch(47.85, 50.25, 281.26°)
OKLab	oklab(55.33% -0.0295 -0.1409)
OKLCH	oklch(55.33% 0.144 258.2)
XYZ	xyz(17.6104, 16.6803, 55.1040)
Luminance	0.1668 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871C5 #C58C38

analogous

#38B7C5 #3871C5 #4638C5

triadic

#3871C5 #C53871 #71C538

tetradic

#3871C5 #C538B7 #C58C38 #38C546

square

#3871C5 #C538B7 #C58C38 #38C546

split-complementary

#3871C5 #C54638 #B7C538

monochromatic

#1D3A66 #2A5695 #3871C5 #6793D4 #96B5E1

Accessibility & contrast

On white

4.84

#3871C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3871C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871C5

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871C5	#FFFFFF	#000000	##FFFFFF
##3871C5	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4879C8

Deuteranopia (green-blind)

#306CC3

Tritanopia (blue-blind)

#008591

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3871c5;
/* rgb */ color: rgb(56, 113, 197);
/* oklch */ color: oklch(55.3% 0.144 258.2);

Tailwind

colors: {
  custom: {
    50: '#8099d7',
    500: '#3871c5',
    950: '#000000',
  },
}

SCSS

$custom: #3871c5;
$custom-light: #8099d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3871c5",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 197
  },
  "hsl": {
    "h": 215.745,
    "s": 55.731,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55329,
    "c": 0.14393,
    "h": 258.2
  },
  "luminance": 0.16682
}

Semantic roles & 50–950 ramp

primary

#3871C5

secondary

#CDB38C

accent

#A249DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3871C5

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

Preview Lab → · Contrast checker → · Palette generator →