#3972C8#3972C8

#3972C8 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.8% C 0.146 H 258.5°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3972C8
RGB	rgb(57, 114, 200)
HSL	hsl(216, 57%, 50%)
HSV	hsv(216, 72%, 78%)
CMYK	cmyk(71.5%, 43%, 0%, 21.6%)
CIE-LAB	lab(48.35, 10.42, -50.21)
CIE-LCH	lch(48.35, 51.28, 281.73°)
OKLab	oklab(55.78% -0.0291 -0.1436)
OKLCH	oklch(55.78% 0.146 258.5)
XYZ	xyz(18.1262, 17.0727, 56.9724)
Luminance	0.1708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972C8 #C88F39

analogous

#39B9C8 #3972C8 #4739C8

triadic

#3972C8 #C83972 #72C839

tetradic

#3972C8 #C839B9 #C88F39 #39C847

square

#3972C8 #C839B9 #C88F39 #39C847

split-complementary

#3972C8 #C84739 #B9C839

monochromatic

#1D3C69 #2B5799 #3972C8 #6994D5 #99B6E3

Accessibility & contrast

On white

4.76

#3972C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3972C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972C8

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972C8	#FFFFFF	#000000	##FFFFFF
##3972C8	1.00	4.76	4.42	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#487ACB

Deuteranopia (green-blind)

#2F6DC6

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3972c8;
/* rgb */ color: rgb(57, 114, 200);
/* oklch */ color: oklch(55.8% 0.146 258.5);

Tailwind

colors: {
  custom: {
    50: '#819ad9',
    500: '#3972c8',
    950: '#000000',
  },
}

SCSS

$custom: #3972c8;
$custom-light: #819ad9;
$custom-dark: #000000;

JSON

{
  "hex": "#3972c8",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 200
  },
  "hsl": {
    "h": 216.084,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55781,
    "c": 0.14649,
    "h": 258.5
  },
  "luminance": 0.17075
}

Semantic roles & 50–950 ramp

primary

#3972C8

secondary

#CEB58F

accent

#A348E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3972C8

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

Preview Lab → · Contrast checker → · Palette generator →