#3871CA#3871CA

#3871CA is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.7% C 0.151 H 259.1°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3871CA
RGB	rgb(56, 113, 202)
HSL	hsl(217, 58%, 51%)
HSV	hsv(217, 72%, 79%)
CMYK	cmyk(72.3%, 44.1%, 0%, 20.8%)
CIE-LAB	lab(48.15, 11.64, -51.68)
CIE-LCH	lch(48.15, 52.98, 282.69°)
OKLab	oklab(55.65% -0.0285 -0.1479)
OKLCH	oklch(55.65% 0.151 259.1)
XYZ	xyz(18.1928, 16.9133, 58.1715)
Luminance	0.1691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871CA #CA9138

analogous

#38BACA #3871CA #4838CA

triadic

#3871CA #CA3871 #71CA38

tetradic

#3871CA #CA38BA #CA9138 #38CA48

square

#3871CA #CA38BA #CA9138 #38CA48

split-complementary

#3871CA #CA4838 #BACA38

monochromatic

#1D3B6B #29569B #3871CA #6893D7 #99B6E4

Accessibility & contrast

On white

4.79

#3871CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3871CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871CA

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871CA	#FFFFFF	#000000	##FFFFFF
##3871CA	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#457ACD

Deuteranopia (green-blind)

#296CC8

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3871ca;
/* rgb */ color: rgb(56, 113, 202);
/* oklch */ color: oklch(55.7% 0.151 259.1);

Tailwind

colors: {
  custom: {
    50: '#8199db',
    500: '#3871ca',
    950: '#000000',
  },
}

SCSS

$custom: #3871ca;
$custom-light: #8199db;
$custom-dark: #000000;

JSON

{
  "hex": "#3871ca",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 202
  },
  "hsl": {
    "h": 216.575,
    "s": 57.937,
    "l": 50.588
  },
  "oklch": {
    "l": 0.55654,
    "c": 0.15065,
    "h": 259.1
  },
  "luminance": 0.16915
}

Semantic roles & 50–950 ramp

primary

#3871CA

secondary

#CFB68E

accent

#A547E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3871CA

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

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