#3870CD#3870CD

#3870CD is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.6% C 0.156 H 260.0°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3870CD
RGB	rgb(56, 112, 205)
HSL	hsl(217, 60%, 51%)
HSV	hsv(217, 73%, 80%)
CMYK	cmyk(72.7%, 45.4%, 0%, 19.6%)
CIE-LAB	lab(48.05, 13.37, -53.56)
CIE-LCH	lch(48.05, 55.20, 284.02°)
OKLab	oklab(55.64% -0.0271 -0.1534)
OKLCH	oklch(55.64% 0.156 260)
XYZ	xyz(18.4405, 16.8349, 60.0234)
Luminance	0.1684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870CD #CD9538

analogous

#38BACD #3870CD #4A38CD

triadic

#3870CD #CD3870 #70CD38

tetradic

#3870CD #CD38BA #CD9538 #38CD4A

square

#3870CD #CD38BA #CD9538 #38CD4A

split-complementary

#3870CD #CD4A38 #BACD38

monochromatic

#1C3B6F #2855A0 #3870CD #6993D9 #9AB6E6

Accessibility & contrast

On white

4.81

#3870CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3870CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870CD

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870CD	#FFFFFF	#000000	##FFFFFF
##3870CD	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4079D1

Deuteranopia (green-blind)

#206CCB

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3870cd;
/* rgb */ color: rgb(56, 112, 205);
/* oklch */ color: oklch(55.6% 0.156 260.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3870cd",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 205
  },
  "hsl": {
    "h": 217.45,
    "s": 59.839,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55636,
    "c": 0.15583,
    "h": 260
  },
  "luminance": 0.16837
}

Semantic roles & 50–950 ramp

primary

#3870CD

secondary

#D1B98F

accent

#A845E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3870CD

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

Preview Lab → · Contrast checker → · Palette generator →