#3970D2#3970D2

#3970D2 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.0% C 0.162 H 260.9°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3970D2
RGB	rgb(57, 112, 210)
HSL	hsl(218, 63%, 52%)
HSV	hsv(218, 73%, 82%)
CMYK	cmyk(72.9%, 46.7%, 0%, 17.6%)
CIE-LAB	lab(48.40, 15.34, -55.85)
CIE-LCH	lch(48.40, 57.92, 285.36°)
OKLab	oklab(56.01% -0.0256 -0.1602)
OKLCH	oklch(56.01% 0.162 260.9)
XYZ	xyz(19.1102, 17.1093, 63.2555)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3970D2 #D29B39

analogous

#39BDD2 #3970D2 #4E39D2

triadic

#3970D2 #D23970 #70D239

tetradic

#3970D2 #D239BD #D29B39 #39D24E

square

#3970D2 #D239BD #D29B39 #39D24E

split-complementary

#3970D2 #D24E39 #BDD239

monochromatic

#1B3C76 #2655A8 #3970D2 #6B94DD #9DB8E9

Accessibility & contrast

On white

4.75

#3970D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3970D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970D2

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3970D2	#FFFFFF	#000000	##FFFFFF
##3970D2	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C7AD6

Deuteranopia (green-blind)

#156CD0

Tritanopia (blue-blind)

#008797

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3970d2;
/* rgb */ color: rgb(57, 112, 210);
/* oklch */ color: oklch(56.0% 0.162 260.9);

Tailwind

colors: {
  custom: {
    50: '#8398e0',
    500: '#3970d2',
    950: '#000000',
  },
}

SCSS

$custom: #3970d2;
$custom-light: #8398e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3970d2",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 210
  },
  "hsl": {
    "h": 218.431,
    "s": 62.963,
    "l": 52.353
  },
  "oklch": {
    "l": 0.56012,
    "c": 0.16222,
    "h": 260.9
  },
  "luminance": 0.17111
}

Semantic roles & 50–950 ramp

primary

#3970D2

secondary

#D5BD92

accent

#AB42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3970D2

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

Preview Lab → · Contrast checker → · Palette generator →