#3870D0#3870D0

#3870D0 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.8% C 0.160 H 260.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3870D0
RGB	rgb(56, 112, 208)
HSL	hsl(218, 62%, 52%)
HSV	hsv(218, 73%, 82%)
CMYK	cmyk(73.1%, 46.2%, 0%, 18.4%)
CIE-LAB	lab(48.24, 14.48, -54.97)
CIE-LCH	lch(48.24, 56.85, 284.75°)
OKLab	oklab(55.84% -0.0266 -0.1576)
OKLCH	oklch(55.84% 0.16 260.4)
XYZ	xyz(18.8061, 16.9811, 61.9488)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870D0 #D09838

analogous

#38BCD0 #3870D0 #4C38D0

triadic

#3870D0 #D03870 #70D038

tetradic

#3870D0 #D038BC #D09838 #38D04C

square

#3870D0 #D038BC #D09838 #38D04C

split-complementary

#3870D0 #D04C38 #BCD038

monochromatic

#1B3B73 #2755A4 #3870D0 #6A94DC #9BB7E7

Accessibility & contrast

On white

4.78

#3870D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#3870D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870D0

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870D0	#FFFFFF	#000000	##FFFFFF
##3870D0	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7AD4

Deuteranopia (green-blind)

#1A6CCE

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3870d0;
/* rgb */ color: rgb(56, 112, 208);
/* oklch */ color: oklch(55.8% 0.160 260.4);

Tailwind

colors: {
  custom: {
    50: '#8298df',
    500: '#3870d0',
    950: '#000000',
  },
}

SCSS

$custom: #3870d0;
$custom-light: #8298df;
$custom-dark: #000000;

JSON

{
  "hex": "#3870d0",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 208
  },
  "hsl": {
    "h": 217.895,
    "s": 61.789,
    "l": 51.765
  },
  "oklch": {
    "l": 0.55838,
    "c": 0.15985,
    "h": 260.4
  },
  "luminance": 0.16983
}

Semantic roles & 50–950 ramp

primary

#3870D0

secondary

#D3BB91

accent

#A943E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3870D0

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

Preview Lab → · Contrast checker → · Palette generator →