#3871C9#3871C9

#3871C9 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.6% C 0.149 H 258.9°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3871C9
RGB	rgb(56, 113, 201)
HSL	hsl(216, 57%, 50%)
HSV	hsv(216, 72%, 79%)
CMYK	cmyk(72.1%, 43.8%, 0%, 21.2%)
CIE-LAB	lab(48.09, 11.28, -51.20)
CIE-LCH	lch(48.09, 52.43, 282.42°)
OKLab	oklab(55.59% -0.0287 -0.1465)
OKLCH	oklch(55.59% 0.149 258.9)
XYZ	xyz(18.0748, 16.8661, 57.5499)
Luminance	0.1687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871C9 #C99038

analogous

#38B9C9 #3871C9 #4838C9

triadic

#3871C9 #C93871 #71C938

tetradic

#3871C9 #C938B9 #C99038 #38C948

square

#3871C9 #C938B9 #C99038 #38C948

split-complementary

#3871C9 #C94838 #B9C938

monochromatic

#1D3B6A #2A569A #3871C9 #6893D6 #98B6E3

Accessibility & contrast

On white

4.80

#3871C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3871C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871C9

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871C9	#FFFFFF	#000000	##FFFFFF
##3871C9	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4579CC

Deuteranopia (green-blind)

#2A6CC7

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3871c9;
/* rgb */ color: rgb(56, 113, 201);
/* oklch */ color: oklch(55.6% 0.149 258.9);

Tailwind

colors: {
  custom: {
    50: '#8099da',
    500: '#3871c9',
    950: '#000000',
  },
}

SCSS

$custom: #3871c9;
$custom-light: #8099da;
$custom-dark: #000000;

JSON

{
  "hex": "#3871c9",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 201
  },
  "hsl": {
    "h": 216.414,
    "s": 57.312,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55589,
    "c": 0.14931,
    "h": 258.9
  },
  "luminance": 0.16868
}

Semantic roles & 50–950 ramp

primary

#3871C9

secondary

#CFB58E

accent

#A447E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3871C9

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

Preview Lab → · Contrast checker → · Palette generator →