#3871C1#3871C1

#3871C1 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.1% C 0.139 H 257.4°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3871C1
RGB	rgb(56, 113, 193)
HSL	hsl(215, 55%, 49%)
HSV	hsv(215, 71%, 76%)
CMYK	cmyk(71%, 41.5%, 0%, 24.3%)
CIE-LAB	lab(47.62, 8.35, -47.36)
CIE-LCH	lch(47.62, 48.09, 280.00°)
OKLab	oklab(55.08% -0.0303 -0.1352)
OKLCH	oklch(55.08% 0.139 257.4)
XYZ	xyz(17.1581, 16.4994, 52.7222)
Luminance	0.1650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871C1 #C18838

analogous

#38B6C1 #3871C1 #4338C1

triadic

#3871C1 #C13871 #71C138

tetradic

#3871C1 #C138B6 #C18838 #38C143

square

#3871C1 #C138B6 #C18838 #38C143

split-complementary

#3871C1 #C14338 #B6C138

monochromatic

#1C3962 #2A5592 #3871C1 #6492D2 #94B3E0

Accessibility & contrast

On white

4.88

#3871C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#3871C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871C1

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871C1	#FFFFFF	#000000	##FFFFFF
##3871C1	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B78C4

Deuteranopia (green-blind)

#356BBF

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3871c1;
/* rgb */ color: rgb(56, 113, 193);
/* oklch */ color: oklch(55.1% 0.139 257.4);

Tailwind

colors: {
  custom: {
    50: '#7f99d4',
    500: '#3871c1',
    950: '#000000',
  },
}

SCSS

$custom: #3871c1;
$custom-light: #7f99d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3871c1",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 193
  },
  "hsl": {
    "h": 215.036,
    "s": 55.02,
    "l": 48.824
  },
  "oklch": {
    "l": 0.55075,
    "c": 0.13857,
    "h": 257.4
  },
  "luminance": 0.16501
}

Semantic roles & 50–950 ramp

primary

#3871C1

secondary

#CBB08A

accent

#A049DE

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3871C1

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

Preview Lab → · Contrast checker → · Palette generator →