#3870CE#3870CE

#3870CE is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.7% C 0.157 H 260.1°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3870CE
RGB	rgb(56, 112, 206)
HSL	hsl(218, 60%, 51%)
HSV	hsv(218, 73%, 81%)
CMYK	cmyk(72.8%, 45.6%, 0%, 19.2%)
CIE-LAB	lab(48.11, 13.74, -54.03)
CIE-LCH	lch(48.11, 55.75, 284.27°)
OKLab	oklab(55.7% -0.0269 -0.1548)
OKLCH	oklch(55.7% 0.157 260.1)
XYZ	xyz(18.5616, 16.8833, 60.6611)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870CE #CE9638

analogous

#38BBCE #3870CE #4B38CE

triadic

#3870CE #CE3870 #70CE38

tetradic

#3870CE #CE38BB #CE9638 #38CE4B

square

#3870CE #CE38BB #CE9638 #38CE4B

split-complementary

#3870CE #CE4B38 #BBCE38

monochromatic

#1C3B70 #2855A1 #3870CE #6993DA #9AB7E6

Accessibility & contrast

On white

4.80

#3870CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3870CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870CE

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870CE	#FFFFFF	#000000	##FFFFFF
##3870CE	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7AD2

Deuteranopia (green-blind)

#1E6CCC

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3870ce;
/* rgb */ color: rgb(56, 112, 206);
/* oklch */ color: oklch(55.7% 0.157 260.1);

Tailwind

colors: {
  custom: {
    50: '#8198dd',
    500: '#3870ce',
    950: '#000000',
  },
}

SCSS

$custom: #3870ce;
$custom-light: #8198dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3870ce",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 206
  },
  "hsl": {
    "h": 217.6,
    "s": 60.484,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55703,
    "c": 0.15717,
    "h": 260.1
  },
  "luminance": 0.16885
}

Semantic roles & 50–950 ramp

primary

#3870CE

secondary

#D2B990

accent

#A844E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3870CE

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

Preview Lab → · Contrast checker → · Palette generator →